Mass(ive) Effect – Evolution

A Mass Effect FanFic

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This is the first time I’ve actually done a FanFic but I absolutely love the Mass Effect Series and so does Wolfie Canem. Based on a conversation on Twitter with him, we came up with a little story that I just had to see more meat of (pun intended). I’ve decided to put this during the events of Mass Effect 2 due to the loyalty mission mechanics there. Naturally I’ve taken a bit of artistic licence with a few aspects of the series but nevertheless, I hope you enjoy.

This story will contain homosexual interactions between males, muscle growth, cock growth, testicular growth, muscle worship and lots and lots of cum. You have been warned!

Mass Effect and all its characters © Bioware

******

The SSV Normandy SR-2 ran silently as always.

Its commander, known to most as Shepard, lay on his bed in the captain’s quarters with a datapad in a calloused hand. The first human Spectre ran his other hand over his face, sighing softly to himself as he continued to pore over the reports of the mysterious Collector incursions occurring all over Terminus Systems. The losses were astronomical but were too far from the central bureaucracy for anyone from the Alliance to do more than bat an eye. They knew the Collectors were related to the Reapers but what they were doing for the genocidal machines was still a mystery.

He was eager for some degree of relief and glanced around his room. Amidst the models of spacecraft, his aquarium filled with exotic fish and the furniture around his room, he found himself lacking any form of stimulus to pull his mind away from the gloom and doom that seemed to follow him wherever he went. His eyes settled on his personal datapad once more. More reports, more mysteries from the Illusive Man. None of them fit his mood and he found himself itching for some sort of release. Something, anything to take his mind off what was plaguing him.

“EDI,” he stated gruffly. “Switch to Privacy Mode. One hour.”

“Understood, Shepard,” answered the feminine voice of the ship’s on-board AI. “No one will disturb you unless it is urgent.”

“Thank you, EDI.”

Guaranteed privacy for the next sixty minutes, Shepard allowed himself a lewd smile and switched the contents of his datapad. The reports flittered away and instead were replaced with words like ‘Gorgeous Galactic Babes’ or ‘Sexy Asari Asses’ and even ‘Komplete Krogan’. He flicked through anything that related to the fairer sex and ogled the male specimens before him. Through his Cerberus-issue bodysuit his crotch began to heat up and his hand instinctively reached towards the area, rubbing his hardening manhood through the fabric. He had learned his lesson the first time he opted for some ‘private time’. EDI had ‘detected his increase in body heat’ and called his entire crew to his quarters. Miranda wore that smug smile on her face for a week and Jack… well Jack wouldn’t stop bringing it up.

One hand on his rising cock and the other flicking through the sites, he found his cheeks flushing with excitement. His eyes fixated at a site he often frequented. ‘Turn-on Turian’. Once click and his throat went dry. Male Turians appeared before him, all of them in sexy, compromising positions that made him lick his lips in excitement. His mind went to a particular Turian that he would’ve loved to spend a bit of time with between missions but, as always, Garrus was doing some ‘calibrations’. Honestly, he thought that his bedfellow – in more than one sense of the word – was just working on the guns to keep himself busy and not boning Shepard. Since their relationship had started, Shepard had learned that Garrus was an excellent shot in more ways than one.

He began to pant softly, unzipping his pants and letting his cock rise out from past the elastic bands of his black, Alliance-issue underwear. He was at least glad Cerberus hadn’t modified anything down there when he had been reconstructed. A smile touched his lips as he brought up an image of a human male being caught in the sexy embrace of a Turian, their lips meshing together and their dicks pressed in a sandwich of their delectable abdominals. He moaned –

… and the door hissed open.

“Shephard I –” Garrus began.

The Turian stopped at the door.

“Damnit, EDI!” Shepard yelled. “I thought I said no interruptions!”

“Apologies, Shepard. You did offer special override privileges to Garrus on the onset of your relationship. I believe your exact words were ‘If I find myself in a compromising situation that I cannot get myself out, only Garrus is allowed to rescue me’.”

He did say that and he was starting to regret it.

“Busy, Shepard?” Garrus asked with the fainted flicker of a laugh between his words. He was smiling. Most humans wouldn’t be able to tell when a Turian was smiling but Shepard knew his boyfriend well enough to know when he was smiling – particularly that smug, smirk of his.

“Just looking for some stress relief,” he answered coolly. “Seeing as you’re here…” He bounded out of his bed and immediately closed the distance between himself and the blue-clad Turian. He felt Garrus’ hands fall on his muscled chest and he managed the faintest of kisses before he was pushed away.

“You know I’d love to help you out there, Shepard and you know how I love just how flexible, versatile and wet human lips are but I came here for a reason.”

Garrus turning down sex? That was bad. Shepard was instantly in commander-mode again. “What’s the situation?”

“I got a tip on some Geth activity from one of my contacts in Omega when I was still running around as Archangel.” Garrus waved his hand, his Omnitool springing alive and transmitting the data to Shepard’s datapad. Realising he was still holding the pad, Shepard brought it to eyelevel and skipped the report.

“An lifeless planetoid?” he asked. “Not too far Omega either. Why hasn’t Aria picked this up?”

“From what my contact said, no one really gives the planetoid much thought because it’s so small and barren. That’s why the smugglers who crashed there weren’t picked up by local channels or authories such as they are here in the Terminus systems.”

“Sounds serious. I bet Aria will be glad to learn of this.” He began to turn towards the door. “I can get a shuttle prepped and –”

Garrus seized his shoulder. “No, Shepard. I’m going in alone.”

He whirled towards his boyfriend in confusion. “What? Why?” he asked though he already knew the answer.

“This came from my contact, Shepard. People who were under my care as Archangel. This is my responsibility. I appreciate the backup but I need to be the one down there saving them. The package is… personal.” He gently reached over and cupped Shepard’s cheeks with his hands. Their lips gravitated towards one another and Shepard’s heart fluttered while his cock squirted excitedly. Garrus pulled away slightly.

“I’m not going to risk you getting hurt for something that’s my responsibility,” said the Turian. “If I need help, I’ll contact you. Just keep the Normandy in stealth and silent.”

Shepard didn’t like it but there was no convincing Garrus otherwise. Not when he was like this. Unless he physically restrained the Turian, there was no way he was going to talk him out of this. “Shoot them dead, then.”

“I never miss,” Garrus answered with a sly wink. “I’ll see you when I get back.”

With one last kiss to the cheek, Garrus turned and headed out, the door hissing shut behind him. Shepard couldn’t keep the worry from bubbling up in his chest but at the same time, he became aware of something else bubbling up between his legs. One glance down and he sighed heavily. Garrus had that kind of effect on him. There was no way he was going to leave this room without an orgasm.

“Well fuck… EDI…”

“Privacy Mode engaged, Shepard. Have fun.”

*******

Garrus hated the idea of not having Shepard beside him as the shuttle dropped him off but as he had told his partner, this was a personal mission. The planetoid didn’t even have a name. It was simply called VSTD-45D. The air was breathable, at least, despite the lack of life so he could survive without his helmet though he was never without his trusty visor. Dusty and with a thick greenish-blue surface, the planetoid was mostly flat save for a few crevices and hills here and there.

He tapped the side of the shuttle and the doors sealed shut. The pilot lifted off again leaving Garrus to trek the short distance to where the crashed ship was.

“Strange,” he muttered to himself as he bounded over to the freighter.

As he approached the blocky ship, he noted that it had landed. From the report he had been given, it sounded like the ship had nosedived into the planetoid’s surface. His hopes of retrieving his package were reignited as he marched towards the ship, his rifle raised and his eye peering through the scope. From the distance, he scanned the ship’s surface. There were signs of ship-to-ship combat. Parts of the freighter’s white hull were charred but there were no signs of a hull breach. No lights were on.

“Disabled. Probably with an EMP weapon of some sort.”

That did not bode well for the crew of the ship. Such a tactic was cruel. Essentially disable a ship, disable all life support and just wait out the crew to suffocate to death. Afterwards, there was nothing stop the pirates or whomever to just get into the ship and steal everything they needed without any problems from the crew.

But something bothered him.

“Why bother landing the ship here? Why not just steal everything in space?”

He approached the ship. Crates had been extracted from the cargo hold. The doors to said hold were wide open and the interior strangely still mostly filled with its contents. His mind was racing. Perhaps the pirates had seen his approach and were now setting up an ambush. He quickly ducked behind one of the man crates and peered down his ripple into the depths of the hold.

No clear signs of life.

“What happened here?” he whispered. He got up and quietly navigated his way up to the ship. As he suspected, the entire ship had been disabled but likely after it had landed. There were a few bots and machinery that clearly had been used to move the boxes and crates around but that was it. No signs of struggle either except…

His keen eyes caught sight of something. Approaching a nearby crate, he leaned towards one of edges. There was a strange, white fluid caking the surface and dripping down onto the ground. As he ran a finger through it, he found that it was viscous and smelled faintly… musky. There was something oddly familiar about it but he couldn’t quite put his finger on it.

A strange sound came from somewhere behind him. It was outside the usual gust of wind or roll of rocks. A strange, electronic warbling noise missed with an odd dripping sound like that from a leaky faucet. The soft drip-drip-drip struck the metal floor. It was close.

Lightning fast, he straightened, gun raised at the ready. There was nothing in front of him except… a small trail of white goo that was spontaneously appearing out of nothing slowing making its way towards him. Puzzle, he peered down the scope of his rifle until he noticed a faint distortion. It was like the air was being filtered through a thin glass.

BAM!

The bullet sang through the air and struck a hard, metallic surface. The air sizzled with an electric buzz and the enormous figure before him dropped its cloaking field in a blur of bluish bolts. The glowing, blue optical ‘eye’ was all too familiar to him.

Geth.

But this was unlike any Geth he had ever seen before. This Geth was enormous. Geth Primes stood at an imposing twelve feet tall but these hulks had to be at least sixteen feet. Their bodies were combination of the Geth’s practical design and armour and distinct male masculinity. The corded, black wires that acted like synthetic muscles had been grossly enlarged so that each one was enormous, round and pressed up against one another. Plates of red armour planted all over their bodies were dwarfed in size by the sheer size of their muscles. It was actually possible to see pectoral muscles that were held up by a column of ten abdominals on their chests and their legs were big enough to intimidate even the Colossi that they used as tanks. Perhaps the most prominent feature of these Geth was the huge tube that sprung from between their tree-trunk legs. Garrus could not help but gawk at the distinctly human-shaped head of the synthetic dick. It looked to be made of some sort of polymer; black, flexible and throbbing with so much fluid pumped by black veins that it vibrated in the air like a divining rod leading straight towards him. That viscous goo he had spotted was dripping from their tips.

“What the fuck…?” he gasped.

The Geth that he had struck staggered back but quickly recovered. The warbled noises came from it and as if on command, the air sizzled around him. Garrus spun. More of these Geth sprang out of the air, dropping their cloaking fields. They came at him unarmed.

These were no ordinary Geth.

Garrus grit his teeth together and fired another round into the Geth in front of him. The rounds truck the synthetic’s chest, spraying white blood in all directions. The moment of distraction was all he needed. He bolted forward, sliding between the Geth’s legs feet first and scrambling back upright. His feet carrying him out of the freighter, he immediately ducked behind one of the crates.

He hit his Omnitool, opening a line to the Normandy.

“Garrus to Normandy. Come in, Normandy.”

Static came back. They were jamming him.

“Damnit!”

The Geth noises grew louder and louder. He stood up from behind the crates and quickly fired a few shots into the Geth. The staggered but didn’t stop.

“Okay assholes,” he growled. “It’s time to play.” He immediately hit the record function on his Omnitool. “Listen Shepard, if you’re getting this, either I’m dead or worse. Either way, I’ve stuck here with some sort of Geth model that I’ve never seen before. Must be some sort of heretics or something like Legion called the ones following Sovereign.”

He fired several more shots, forcing the Geth to slow their advance. They seemed confident with their approach and just strode forward, almost strutting with a gait he had only seen with bodybuilders; a sort of wide-legged walk with chest pushed out and shoulders so broad that their arms hung far from the V-shaped torso. His bullets barely seemed to do much damage to them. There were no shields upon them and even as he struck the ‘squishy’ synthetic muscles, it did nothing to stop them.

Turning, he bolted for the next row of crates. The Geth didn’t increase their pace and just continued on their advance like a wall of mechanical muscle.

“They’re huge. Bigger than any Geth I’ve seen and built like… Like, I don’t know. Maybe the got into the net and downloaded their specs based off some muscle fantasy fetish site. Either way, they’re massive, my bullets aren’t doing anything against them and they’re sprouting fucking dicks. Going to try Disruptor Ammo.”

He waved his Omnitool over his rifle. A faint electrical buzz encased the barrel of his weapon and a holographic icon appeared indicating that his ammo were now electrically charged and specifically geared to taking down shields and synthetics. Praying this would work, he sprang up from behind the crates once more and fired a round into the nearest Geth.

BAM!

The machine barely flinched. Even with the faint electrical buzz around the bullet wound, it didn’t flinch.

“Fuck!” He bolted for the third and last line of crates. “Disruptor Ammo doesn’t work. They’re like some sort of… Geth Hulk or something.” He popped the thermal clip of his rifle and closed his eyes. “Listen Shepard, I don’t know what’s going to happen. So whether you get this or not, I just wish that you were here by my side. You’d probably come up with something to beat them or come up with some rousing speech to get me to suck it up and fight like I’ve never fought before. You were always a better leader than I was. A better fighter. You made me better. I’ve always respected that about you.”

He smiled, opening his eyes and resting his head back against the crates. “I love you.”

Taking a deep breath, he straightened and –

Suddenly came face-to-face with one of the Geth Hulks.

“Fuck!”

The Hulk seized the barrel of his gun, twisting it upwards. He instinctively pulled the trigger and the bullet smashed right into the synthetic’s head. The entire machine staggered and the lights coming from its optical eye winked out. The Hulk staggered and crumbled to the ground, its grip around the gun loosening.

Stunned, Garrus couldn’t help but laugh. “Hit it in the head. Normally, that wouldn’t work of Geth.” Grinning, he hefted his gun once more and took aim. “I might just get out of this, Shepard. See you in a bit.”

*******

“He’s probably fine, Shepard,” Jacob said. Just like Garrus, Jacob liked to tinker with weapons but where Garrus worked with massive ship-sized weapons, Jacob maintained their armoury. “You know Garrus. He likes to go all ‘lone wolf’ every now and then.”

“It’s been more than a day, Jacob,” Shepard answered grimly. “He should have reported in by now.”

“Maybe but you’re not giving him enough credit. This is Garrus we’re talking about. He’ll be fine.”

This was the sentiment shared by the rest of the crew. ‘Garrus will be fine’. But there was just something in Shepard that told him that was not the case. No doubt everyone else would disprove of him leading an expedition to ‘save’ Garrus. Not to mention it would reflect badly on how much he trusted Garrus if he came flying in on the Normady with his entire crew to save the Turian if said Turian had wrapped things up. The image of Garrus sitting on a mound of bodies, cockily cleaning his rifle while they approached was probably just something that Garrus would love to boast about.

Still, something didn’t sit well with him.

It was how this mission was ‘personal’. They may not have been intimate partners for a long time but he thought he knew Garrus well enough that when he needed to do something for ‘personal’ reasons, he didn’t need help. That if Garrus really wanted help, he would come to Shepard and ask for it. Just like when it came to Sidonis and Dr. Saleon. But this…

“Maybe you’re right, Jacob,” he said at length.

Wordlessly, he stepped out of the armoury, making sure that Jacob didn’t notice that he had taken a rifle with him. It was a good thing that it was a short distance towards the elevator. The moment he was inside, he tapped his ear to open some comms.

“EDI, I need you to be discrete about this, understand? No overrides. No questions.”

“Understood, Shepard.”

He sighed softly and checked the rifle. “Prepare a shuttle. Do it quietly. Disguise it somehow as a system malfunction. I need to find Garrus.”

“I can temporarily shutdown monitoring systems and lights briefly. I will explain it as a routine stress testing to improve cyber warfare efficiency. Will you be heading down to the shuttle bay immediately?”

He hit the button for the top floor. “I need to grab my armour first. Fifteen minutes.”

“Understood. I shall make the announcement to make sure that everyone is evacuated from the shuttle bay immediately.”

“Thanks EDI.”

The elevator slipped open and he immediately headed into his quarters. Slipping on the familiar N7 armour was like putting on his skin. It just felt right to have it there. The only time he never felt exposed without it was when he was in Garrus’ arms. Shaking the worry he was feeling from his head and heart, he focused on the mission. He packed a few thermal clips that he always had stored in his quarters just in case and headed to the elevator.

“EDI, are we ready?”

“Yes, Shepard. Crew are prepared and ready. You will have a ten minute window to execute your plan before power and monitoring comes back online.”

“More than enough time.”

He stepped into the elevator and hit the button for the shuttle bay. The moment the elevator doors sealed shut, the entirety of the Normandy shuddered. The lights flickered off and emergency lighting sprang up bathing the entire ship in an eerie, red glow. The entire crew looked around in confusion and Shepard could hear them chattering away on the comms demanding to know what was happening.

“Please stay calm,” EDI said soothingly_. “This is part of the stress testing. I have found several vulnerabilities in our power and engineering sections. Rest assured, only non-critical systems are impacted. I will restore power in ten minutes.”_

That was his cue. The elevator hit the shuttle bay and, thanks to EDI’s quick thinking, it was empty. Armoured up and armed, he rushed towards the nearest shuttle and hopped inside. EDI quietly opened the bay doors. With the rest of the crew blind, they had no idea what was happening.

“System restore in five minutes.”

That was more for his benefit than the rest of the crew.

“Time to move,” Shepard grunted and began programming the shuttle. He remembered Garrus’ last location thanks to have been shown his communications from his contact. The shuttle shuddered as its engines fired up and he steered it quickly out of the Normandy and into the expanse of space. He was a good several clicks away when EDI announced that all systems were back online.

“I have closed the Normandy’s doors behind you, Shepard. Will you be needing assistance on this mission?”

He considered rejecting the offer but if Garrus of all people had fallen because of whatever was down there, he might need extra backup at a moment’s notice.

“Thanks, EDI. That’d be appreciated.”

“Understood, Shepard. I am locking in Garrus’ last known location now and…”

Her sudden trail off worried him.

“What?”

“I am detecting an attempt to reach our communications from the planetoid. It seems to have been jammed, however.”

That was not good. His heart was now pounding heavily in his chest.

“Running routine scrubbing. There. Running through the recording now.”

“Garrus to Normandy_. Come in,_ Normandy_.”_

“Garrus,” he breathed. “How old is the message?”

“Almost twenty hours old.”

“Damnit. A lot can happen since then.” He could see the planetoid as he approached and he mentally urged the shuttle to get there faster. “Is there more?”

“Yes. Playing it now.”

“Listen Shepard, if you’re getting this, either I’m dead or worse. Either way, I’ve stuck here with some sort of Geth model that I’ve never seen before. Must be some sort of heretics or something like Legion called the ones following Sovereign.”

His throat went dry. Garrus was not the kind to give up easily and if he was recording that message just for him then the situation was indeed very dire. The sounds of gunshots filled the recording and he heard some sort of strange garbled noises in the background.

“What’s the noise, EDI?”

“It appears to be similar to the noises Geth make when communicating with one another but it is extremely distorted and unlike any vocalisation I have been able to understand based on my interactions with Legion and my databanks. Perhaps they are Geth separatists similar to the ones that followed Sovereign as Garrus indicated.”

“Never knew Geth had different languages based on their beliefs. Keep playing.”

The shuttle shuddered as it entered the planetoid’s atmosphere.

“Almost there, Garrus,” he told himself.

“They’re huge. Bigger than any Geth I’ve seen and built like… Like, I don’t know. Maybe they got into the net and downloaded their specs based off some muscle fantasy fetish site. Either way, they’re massive, my bullets aren’t doing anything against them and they’re sprouting fucking dicks. Going to try Disruptor Ammo.”

Shepard shook his head in disbelief. “You must be joking…”

“It is not very likely,” EDI supplied. “It is possible that a certain branch of Geth managed to integrate some of the knowledge they gleaned from monitoring non-synthetic communications into themselves. I find it odd, however, that Legion did not know of this.”

“Maybe he just didn’t feel like telling us.”

“How do you suppose?”

Shepard smirked to himself a little. “Sounds to me that these Geth are perverted. Kind of like the horny brother recently discovering his body going through puberty. You don’t talk about them.”

“I see. You theorise that these Geth are perhaps the black sheep of the family and Legion felt a degree of embarrassment towards them. Considering how they were possibly not a threat or of little consequence, he did not feel like mentioning them.”

“We did just earn his trust recently, after all.” He shook his head with a soft laugh. “Good thing Geth don’t have windows, I guess.”

“Of course. They are structural weaknesses.”

“Well that yes and with windows you can see… Never mind. Play the rest.”

There was an electrical buzz on the recording just as the shuttle approached the downed freighter. Shepard frowned at the sight of the ship. It had landed. It wasn’t crashed as the report to Garrus had said. His attention was brought back to the sounds of fire from the recording. He hefted his rifle and stepped out of the shuttle into the blustery, dusty atmosphere as Garrus’ voice echoed in his ear.

“Fuck! Disruptor Ammo doesn’t work. They’re like some sort of… Geth Hulk or something.” There was a pop, the tell-tale sign of a thermal clip being ejected. “Listen Shepard, I don’t know what’s going to happen. So whether you get this or not, I just wish that you were here by my side. You’d probably come up with something to beat them or come up with some rousing speech to get me to suck it up and fight like I’ve never fought before. You were always a better leader than I was. A better fighter. You made me better. I’ve always respected that about you.

“I love you.”

Shepard came to a stop. His heart was racing but his chest felt empty. Those words lay heavily on him and he shivered. Tears would not come. There was still hope that Garrus had made it even though the recording sounded so final, so resolute.

“Fuck!”

He straightened and just as he did so, his gaze peered over one of the many crates unpacked across the area that provided some rather convenient tactical cover. There was a sound of a single shot and more of that warbled noise.

“Hit it in the head. Normally, that wouldn’t work of Geth.” Grinning, he hefted his gun once more and took aim. “I might just get out of this, Shepard. See you in a bit.”

That confidence seemed so encouraging and as he peered past the crates, he could see one of the Geth ‘Hulks’ that Garrus had mentioned lying on the ground. Just as his partner had mentioned, the thing was a beast. It lay on its back, strange white goo bleeding out of its shattered head. Despite lying prone on the ground, it’s ‘dick’ was still very much erect. Shepard wasn’t sure whether to laugh or be disgusted as he approached the synthetic. Around him, he could see about four other bodies of Hulks, all of them with their heads shattered by a single bullet.

“What do you think, EDI?”

“Scanning them now. Though I am unable to gather much based on the damage and the lack of communications but. However, based on what I can gather, unlike other Geth who have a collective intelligence based housed within their entire unit, these Geth seem to have all of their processing within their heads. Note the lack of a communications array as well.”

Shepard looked past the Geth’s shoulder and noticed the distinct lack of an antenna that most Geth possessed. From his conversations with Legion, the Geth were not contained within a single unit. They were more like billions upon billions of individual programs that could run wirelessly through the internet. The distinct lack of an antenna lead him to believe…

“They’re like Legion?”

“Entirely possible. I cannot know more without examining their network more but I suspect that they are either prototypes for Legion or evolved version. Either way, it seems that because all their processing is done in their cranial area, damage to it will disable them.”

That seemed incredibly strange and he rubbed his chin thoughtfully. “This seems outside of normal Geth tactics. Maybe Legion would know more.”

“Should I contact him?”

“No. Not yet.” Shepard straightened and cased his gaze around. “I still need to find Garrus. Any idea where he is?”

“I am detecting a faint signal to your northeast. It is nearby.”

The only thing in that direction he could see was a canyon. Though given the how the ship had landed and how close it was to said canyon, he could only guess that it was no coincidence. Rifle pressed against his chest, he stormed down towards the canyon, keeping his senses sharp and eyes wandering for any surprise Geth attacks. He couldn’t expect these synthetics to be the same as the ones he had fought before.

Now he dearly wished he had some backup. Some part of him hoped that as he approached the canyon ledge, he’d see a familiar Turian in blue armour crouched on the edge peering down the barrel of his sniper rifle but such was not the case. What he did see, however, was some familiar Geth architecture.

“A Geth base,” he muttered to himself. To avoid detection, he crouched down and pulled his rifle up to his eyes, looking through the scopes. The wide, dark, sweeping structures of the Geth were built into the very walls of the reddish-brown canyon. It was a relatively small facility with only a single main structure but a wall and several watchtowers positioned on either end of the canyon. The Geth he saw positioned there were just as Garrus had described.

“Damn they’re big.” He mentally chuckled to himself at the thought of those words referring to more than just the Geth’s overly swollen muscles.

There was now clear way into the structure. Not with those walls but he also noted that these Geth were not wielding any sort of weaponry. A plan quickly formed in his head.

“Hang on, Garrus. I’m coming.”

*******

It was the deep, warbling noise that woke up.

Garrus felt like he had gone ten rounds with a raging Krogan. His senses slowly returned to him and he found the strength to open his eyes. Cold, hard, metal flooring scraped against his knees indicating that he had been stripped of his armour. The air was still and very cold. As his vision came into focus, he realised he was being dragged across the floor naked, pulled by his arms by these hulking Geth. Quickly deciding to feign unconsciousness, he quietly observed his surroundings.

He was inside some sort of Geth structure. The black metal and presence of various forms of circuitry and pipes were a dead giveaway. He was being escorted by two of these Geth Hulks, once more huge and sporting massive dicks. Around them, he could see strange vats filled with white fluid. He knew that Geth had a sort of conductive white ‘blood’ and could only guess that was what filled those vats. What he didn’t expect to see, however, were the non-Geth perched inside the vats.

“Holy…” he whispered, breaking his silence.

Within each of the chambers were what appeared to be super-sized men of all species. Krogan, human, Turian, Salarian and even a few Batarians and Vorcha. Each of them had to at least be sixteen feet tall, just as big as these Geth, and with muscles bulging and throbbing as odd pipes pumped some sort of liquid into them. All of them sported ridiculously enormous cocks, nearly over three quarters their height in length and as thick as one of their engorged arms. None of them were moving, however.

A loud cry erupted from one of the vats and he turned in time to see a Krogan bash a fist right through the glass. Several of the Geth Hulks positioned themselves around the enormous prisoner. The vat’s outer metallic walls bucked and heaved and in a scene that reminded him a little of Grunt’s own emergence, the Krogran burst from the tube in a gush of white, opaque liquid. The victim, still hooked up to various pipes stumbled onto his knees and hands. His left leg looked horribly mutated – more than the rest of his body. Bright blue nodes had emerged from deep within his body, puncturing the flesh and secreting more of that white goo like it was his blood. Bright blue veins radiated out of those nodes and his skin had turned black akin to the synthetic muscles that the Geth bore.

The Krogan gagged, spitting out the gunk that he had been submerged in. He twitched once… twice… and then let out a gasping death rattle. His eyes went blank and he stopped moving, barely suspended by the wires that still hooked him up to the vat. The Hulks moved in, tapping on their omnitools and likely checking for life signs. He noticed one of them shake their heads and the Krogan was released from the pipes.

Garrus realised that whatever they were doing to these poor men lead to death. None of them seemed to survive.

And he was next.

He tried to wrench his arm free but the Hulks had incredible strength befitting the size of their muscles. Their huge forms lifted him easily into the air and deposited him into a vat that was resting horizontally. Garrus quickly found himself partially submerged in the white fluid, his head just poking out of the liquid.

“Hey, buy me dinner first,” he snarled as the Geth sealed the vat above him in a later of domed glass. He slammed his fists against it. “When I get out of here, I’m going to tear you all a new data port!”

His threats fell on deaf ears, however, as the Geth merely warbled at him again and turned away. A loud mechanical buzzing filled the vat. The white goo rippled and he saw the curve of one of those pipes breach the surface for a moment like a sea serpent snaking its way beneath the waves.

“No you don’t!” he shouted and reached for the pipe, yanking it out from beneath the waters. The end had a sort of claw for gripping but it also had a needle at its centre built to puncture flesh. It railed and snapped at him, twisting in his grip, trying to escape. He saw another trying to sneak its way out from his right and he immediately seized it, keeping it as far away from him as possible.

He knew it was a losing battle but he was not going to just give up.

Seemingly trying to compensate for the first two that had been restrained, another two tentacles roles up, one from the right and the other to the left. They were like those Earth creatures, cobras, rearing their heads before they struck. He yanked the pipes he had restrained towards them, seizing them in his grip, now restraining two in each hand.

“Ha!”

Perhaps trying to sneak in another strike, another tendril rose from his left but he skill fully yanked the two he was restraining towards it, forcing it to get tangled with its brothers. He kept all three pinned against the wall to keep them as far away from him as possible.

“Is that all you’ve got!?”

One rose between his legs and he immediately slammed his knee into it, pressing it against the glass and keeping it from diving into him. There was moment of confidence that he had managed this much but it was short lived as that very same past slipped past his leg and drove itself right towards his crotch.

“Goddamn!” he cried, eyes watering as a blast of pain shot through his most sensitive area. That needle hurt like hell and the momentary lapse of concentration was enough to let the other tentacles free. The one to right slipped beneath his grip and dove right into his right flank. The other jammed itself right into his neck, forcing him to throw his head to the side and grit his teeth in agony. The three in his left hand went haywire the moment he showed any signs of weakness. One jammed itself right into his left pectoral and the other two found purchase on the closest piece of flesh they could get their needle into – his arm. He felt one bite into his bicep and the other into his forearm.

Strangely, the pain was only temporary. Almost like getting an immunisation injection. What he feared was what would come next. He made to yank the tentacles away but they immediately started pumping him with whatever it was that the others had been exposed to. Jarring pain erupted all over his body, radiating outwards from where the tentacles had punctured his flesh. Now it was really like getting an injection.

He cried out in agony, eyes squeezed shut. Gritting his teeth together, he braced himself for excruciating pain… but instead found an odd sensation creeping up through him. It started from his crotch. He lifted his head slightly, fearing what he would see. What his eyes beheld was far worse than whatever he could’ve expected.

He was getting aroused.

His Turian dick was rising, filling with blood and filling him with a sense of excitement and desire.

“What the fuck!?” he shouted.

That sensation crept throughout his entire body. Garrus was unable to deny the strange, warm sensation running through his entire body just like when he was in Shepard’s arms. Every inch of him felt stimulated, every piece of flesh quivering and coiling like they yearned to be touched, to be held. That desire was building deep within his limbs, within his bones and veins. A heat like no other was growing in his very core and with each breath, it intensified like he was fuelling it with every beat of his heart. To some degree, he probably was as his rapidly racing heart was pumping the Geth venom throughout his entire body.

He grit his teeth, trying to keep himself calm and trying to think of thoughts that would down his arousal.

“Dead Pyjaks. Uhm… Urf… bad calibrations… Grrr…”

The heat was intensifying. He could feel it crawling from his neck, seeping down his right arm and across his chest. It was bleeding down towards his legs, making his toes curl in ecstasy like that moment just before a euphoric orgasm. He tried to stop it but his body was outside of his own control and his back arched in pleasure.

“Fuck! Fuck! The Reapers… Miranda! Fucking Jack!”

Nothing was working. He was only growing more and more aroused and as the seconds ticked by, the heat of whatever it was that the Geth were pumping him with bled into his skull and the images he was trying to pump into his head were replaced by one man.

“Shepard…”

Suddenly his entire body relaxed and he lay in the pool of Geth fluids, eyes glazed over and his mouth slightly agape in a lewd smile.

The Geth formula was quickly took hold. It started with the areas where the tentacles had punctured. Organic muscles suddenly became reprogrammed to start consuming the fluids that had been pumped into him. They ate it all greedily. Cells that had reached their genetic limit suddenly became alive with new purpose and a new goal: to grow.

A sound akin to a deep, rumbling gurgle filled the tank. Garrus’ left arm which had the most pipes plunged into it twitched and was wracked with spasms. Every muscle flexed and relaxed rapidly, his hand forming a fist and unfurling constantly. With each flex, veins that had lain hidden beneath his Turian flesh started pressing up against his muscles, rising upwards like he was pumping them full of more and more mass.

The process began.

First came the bones. The formula shot through his veins, directed by its programming and went right into the very core of his being. His immune system was immediately rewritten. Cells hungrily consumed the formula, feeding off its nutritious substance. They hardened, becoming like steel beams and nearly unbreakable. Layer over layer of hardened bone meshed with his skeletal structure, reinforcing joints but without sacrificing any of his flexibility. When the bones could not be reinforced anymore, they began to grow.

A rush of euphoria hit Garrus like his entire body was one huge dick edging toward orgasm. Again his body involuntarily arched. His left arm throbbed and stretched. Bones lengthened, widened and thickened. Where once his hand rested just below his thigh, it crawled inch by inch lower. Every flex of his hand tightened the entire length and when he relaxed, it lurched forward, bypassing his thighs, spreading past his knees and quickly being capable of reaching his feet. With one hand huge hand about as big as his chest, he was able to touch his toes lying down.

He looked bizarre with one arm so long and with his muscles stretched so taut that they were practically pressed up against his enlarge bones. Before any blood vessels or flesh could rupture, the formula went to work to compensate for the gross mutation. It redirected its efforts towards his muscle. A gasp left his lips and he thrashed his head from side to side. Some of the white fluid that he was immersed in seeped down his throat but he was far too dazed, far too enraptured and blinded by the sensations overwhelming his body to really pay much attention. That was good. As he drank more of the goo, it washed into his stomach where it was readily absorbed and stimulated the growth even more.

This time, every time he balled his fist, his muscles tightened and bulged. Whenever he relaxed, they would not leave their flexed state. Another fist formed and again, the muscled surged outwards, bypassing their limits. A vein crawled up from his forearms, spreading like roots of a tree and feeding into his muscles directly. Each muscle across his forearm bulged and became two, hard bands of masculine flesh covered in a lattice of veins constantly pumping and visibly pulsating.

Those very same veins crawled up his arms, each time they spread and branched off filling him with an overwhelming sensation of his entire limb being like a cock rising to full mast. An immense fire was building deep within his bones and he could feel pressure building within them. Every pulsation pushed his biceps to be bigger and pressed his triceps past their limit. He was edging closer and closer to orgasm. Through his dazed eyes, he could see the mountain of his upper arm rising past his chest, dwarfing his entire torso. It was a huge, curved mountain with massive crevasses and valleys across its surface covered in big, green veins. Some part of him registered that what he was seeing was very wrong but at the same time it felt so good.

A deep, primal growl rose from Garrus’ throat. The growth crawled up towards his shoulders and he pulled his head away from it. He was madly bucking his hips with every surge of muscle. Every inch that his shoulders grew, his cock was thrusting into the air, squirting some of his own precum which quickly mixed in with the white goo around him. Scalloped muscled bulged quickly to outsized the rest of his body. It almost looked like the arm was wearing him.

But that soon changed as the formula turned its focus to the rest of his body. Garrus’ heart suddenly beat even stronger in his chest. Every thump was like a clap of thunder and every whump was an earth-shattering quake. Each pulse saw his left pectoral pushing outward further and further, growing to match the size of his arm and shoulders. Muscles groaned, veins pushed up against his flesh and bones quickly resized. His vision of his arm was barred by the enormous mountain that was quickly rising up in front of him.

The sensation in his body, that constant building pressure like he was about to cum, grew more and more intense in his pectoral. He couldn’t understand why it wasn’t remaining constant or subsiding like in his arm. It just kept growing and he could feel his heart pumping so hard that it could’ve exploded out of his chest. In fact, he felt it ramming up against his ribs.

It was going to explode!

In his panic, he came to a realisation. His arm wasn’t undergoing that pressure because he was constantly flexing it! The pressure needed some sort of outlet! He had to find some way to release the pressure in his chest.

All he could think of was to…

Whump.

… bounce his pectoral. He had never really done it before but it just felt right now. That little movement saw the pressure subside and he let out a soft grunt for the success. Though the burden of the intense growth seemed to come back just as quickly as it fell. He had no choice but to tense his muscle again, causing the pectoral to bounce. The movement was addictive and as the pressure faded, his mind made the connection that it was akin to having a mini-orgasm. As the intense need for release rose, he would flex the muscle and he would get that hit of euphoria that came with afterglow. In his addled mind, he could do nothing but to keep bouncing the muscle unknowingly spreading the Geth formula into the rest of his system.

Satisfied that its host had adapted to the mutations, the formula spread through to Garrus’ other pectoral. This time, there was far less resistance as the moment Garrus felt the growth starting on the other side of his chest, he instinctively began flexing the muscle there. Both his chest muscles were suddenly rising and falling one after the other in a bizarre, muscular tango or like two pumps that were propelling the formula through the rest of his body.

With his chest so large now and casting a shadow over his features, Garrus was starting to find it hard to breathe. Thankfully, the formula compensated. The needle in his neck quickly became a focal point for his transformation. Muscles across his neck tensed and lengthened. His throat widened, his windpipes growing bigger to meet the oxygen demands of his new body. His traps grew alongside the transformation. There was a brief pain throughout his skull that forced him to shut his eyes as his skull grew alongside the rest of his body. Every organ was filled with the Geth formula, each one growing bigger and bigger. Even with the increase in size of his neck, he found himself having to constantly breathe through his mouth as he instinctively knew that he could not meet the demands of his future body by just breathing through his nostrils.

His right arm, not to be left alone, reached up and rubbed his mountainous pectoral. For the moment, it was still unaffected by the formula and could barely reach the side of his mountainous chest. Perhaps realising what was happening, the formula surged through his arm and he gasped as it too began to stretch and grow. Just like his left, this arm stretched outwards, bones rapidly growing. However, just they stretched, so too did his spine. Loud crackling noises filled the vat as his upper body stretched, vertebrae being reinforced and lengthened. Bursts of pleasure rocketed up his spine as his nerves were lengthened to fit the needs of his body. His fingertips played perpetual catch-up as even though his arm stretched, with his lengthening torso, they could only stoop down to his calves. The muscles that grew quickly matched his left arm and just like the left, he was forced to constantly flex and pump his muscles to keep them from overloading.

Unable to stop himself, Garrus reached up and flexed both of his arms in a manly double bicep curl. He moaned in ecstasy as the tightening of all his upper body muscles expended a lot of the energy building deep inside of him. That gave room for the formula to quickly shoot down his abdomen. He grunted loudly, his voice many octaves deeper and like a rumble of a dormant volcano. His internal organs twisted and undulated, growing bigger and bigger to match the needs of his body. To protect them, his abdominals hardened and grew. Each one became as big as a normal Turian’s head and as hard as steel. Two solid rows of four abdominals were quickly framed by perfectly symmetrical muscles that tapered down from his broad chest and back towards his crotch.

Perhaps in some ironic twist, the formula bypassed his cock and went straight towards his thighs. He could hear them growing, muscles flexing to the sound of stretching leather and bones creaking in their growth. Garrus quickly thought up of ways to flex his leg muscles or he knew that they would quickly become overloaded. He flexed his toes, his calves, his thighs over and over again. He moved his entire body in the now-small confines of the vat, executing poses he remembered seeing in bodybuilding magazines and going through drills he remembered from his Turian military training in an attempt to regulate the power building inside him.

He was well rewarded. His thighs simultaneously ballooned out, growing enormous and pushing up against the sides of the vat. Hard quads pressed up against his skin with a lattice of veins accompanying them. His knees buckled momentarily underneath their weight but his bones were quickly reinforced as his hamstrings strengthened and became like two, muscular shelves that could support his huge, muscled butt that could turn coal into diamonds between their cheeks.

The veins crawled over his knees and straight into his calves. A grunt left him as he felt his shins stretch and lengthen. There was a moment of pain like when someone kicked him in the shins but that was quickly replaced by that irresistible sensation of near-orgasm. His calves widened, broadened and nearly consumed his feet in their growth. He could not help but stretch his leg out and slam his foot against the glass of the vat just to watch his calves spread out wide and become big enough to feed a family for weeks.

Right before his eyes, his foot followed the path of the formula. His two toes, nearly vanishing beneath the muscles of his legs, poked out and stretched, becoming bigger and bigger. He groaned loudly and tried to press his foot up against the vat’s glass, hoping this new body could at least help him break out of its confines. But no matter his strength, the vat’s glass held and the pressure was still building in his leg. He was forced to lower his leg and keep flexing, keep his muscles moving to keep the formula and the pressure from building.

With most of his body transformed, there was only one destination left.

Garrus could already feel everything the formula had start shooting towards his crotch. His penis was aching for release and there was nothing he could do to stop it. Panting, begging for release, he reached towards his cock with his enlarged hands. It seemed so small now in his gargantuan palms but the formula seemed to realised what he wanted and started stimulating the growth there. He moaned as his already erect dick only grew bigger yet again. Just like any other muscle in his body, he was flexing it and with each flex, it grew bigger, fatter, longer. He gasped when he felt the sensitive tip press up against the base of his enormous pectorals, a gaps that turned into a groan when it just kept growing and slipped in between the cleft of his pectorals.

His mind was instantly taken back to the times when he had mounted Shepard. His dick slipping between the warm, tight vice of his pecs was just too familiar that his vision blurred and he could only see himself once again in his partner’s arms and fucking him like a wild animal. His massive hands found purchase on his veiny dick, constantly rubbing it to let off the excess energy for the formula even as a new and yet familiar pressure built in his balls.

“Shepaaaaaaaaard!” he roared.

His hot seed mixed with the formula came pouring out of his dick with enough force that it splattered across his face. Garrus gagged as he tasted his own tainted cum. Somewhere in the back of his head, he knew he would never be a normal Turian again especially with the oddly sweet and slightly metallic tasted of his cum pouring down his throat. His eyes rolled back into his head as the pleasure of release final washed over him and he sank into the unconsciousness.

That should have be the end of it. The formula had done its job. The Geth should’ve stopped pumping the formula into him but there was interference. The formula just kept coming. With no direction to go, the formula just repeated its same routine. It began pumping into Garrus’ left arm. It was unable to do anymore more and was utterly confused. All it could do was keep trying to change the Turian’s flesh.

His flesh began to darken. The taut muscles twisted, turning black and with each sinew clearly visible. The veins pulsating across his arm began to obtain an eerie purplish blue colouration. Where the formula focused on, large, nodes of the same colour began emerging, breaking the skin. Some of his veins even breached his flesh, lashing out as purplish-blue tentacles with nowhere to go.

The experiment had gone horribly wrong.

“Shepard…” Garrus moaned.

*******

Shoot them in the head.

That was what Garrus had said. Though Shepard was no sniper, these Geth Hulks were big and they had bigger heads to compensate. So as Shepard skidded down the side of the canyon feet first, he took aim.

BAM! BAM!

His shots hit their mark. The Hulks stationed on the westerns watchtowers staggered, faltered and then collapsed. He spun towards the east just as the Hulks were turning. With their photoreceptors turned towards him, it was easier to find and shoot them.

BAM! BAM!

Bullseye.

The Geth went down but that left the Hulks down on the ground the problem. He could already see several of them charging out of the facility looking for the source of the disturbance. They didn’t seem to have the sort of swarm intelligence that the other Geth had and they were definitely acting individually. Shepard couldn’t spend time thinking about that and fired off a few more shots, taking town another two Geth before he hit the ground. He tucked his body into a roll to mitigate the damage and immediately bolted for a nearby barrier that provided tactical cover.

Quickly, he launched off the thermal clip and leapt out from behind the barrier. Without weapons, the Geth Hulks could only advance at him with their arms raised like massive, metallic zombies. They were slow to move but their legs were long so each step crossed a significant distance. Shepard fired, taking down one Geth after the other and advancing towards the facility itself.

He wasted no time. The moment the last of the Geth was done, he rushed towards the door and brought up his omnitool, lifting it against the lock.

As his omnitool went to work opening the door, he said, “EDI, can you get me some blueprints of the facility?”

“Scanning now. It seems like a fairly straightforward facility. Ahead of you is some sort of atrium followed by a research lab and then a ‘processing plant’ afterwards. Geth platform storage is behind that.”

“Garrus is probably at the processing plant then. I hope I’m not too –”

The door suddenly sprung open. A Geth Hulk was there. It reached down, seizing Shepard by his waist and immediately pulling him towards its huge dick. Shepard’s open mouth was opportunity enough for the bulbous head to fill his cheeks and immediately squirt some of its ‘cum’ down his throat. He gagged at the oddly sweet-metallic taste but didn’t let that distract him. He immediately lifted his rifle and took a shot at the Geth’s head. Its ‘eye’ flickered out and it toppled to the ground.

“Shepard, are you okay?”

He gagged and wiped the fluids from his lips. “I’m fine, EDI. Just had the worst blowjob of my life.”

Shaking his head, he charged forward into the facility. The atrium had about five of the Geth Hulks emerging from a large set of double doors. Beyond that he could see what appeared to be a lab of some sort with a myriad of vats containing white goo. He quickly ducked behind a pillar and began firing off at the Geth. They seemed to learn that their heads were a vulnerability and quickly lifted their arms to block his shots.

“Damn… They’re definitely learning.” He quickly switched his rifle to incendiary ammo. “EDI, can you hack into the systems here? Find out what they were doing and where they’re keeping Garrus?”

“If I do that, Shepard, it will take significant processing power and I will be unable to conceal this from the rest of the crew of the Normandy.”

“I think we’re past keeping this a secret. Do it.”

“Understood.”

Shepard jumped out from behind the pillar but the sudden movement caused his head to swim. He staggered slightly and felt a strange heat deep within his bones like someone had replaced his marrow with hot gel. It was radiating outwards and filling his muscles, causing his skin to prickle. It wasn’t unpleasant just… strange.

Shaking it off, he lifted his gun again and took several shots at the Geth’s lifted arms. The incendiary ammo did its work and immediately ignited the Geth’s synthetic muscles. Normally, such tactics wouldn’t work on them but as the fire caught, they immediately lowered their hands to put it out. That gave him the opportunity to shoot them right in their photoreceptors.

The five Geth went down clearing a path right to the lab. He charged forward, his muscles pumping and heart racing with each step. All the while, he was left with a strange sensation of relief and ecstasy with every movement from his body. It was like he was cumming with every step and it left him lightheaded and a little sleepy. He grunted softly and stopped just short of the lab’s door.

Back pressed up against the side of the wall, he popped another thermal clip and readied himself. At the same time, he muffled a groan as he felt his cock pressing up against the inside of his armour.

“What’s happening to me…?” he mumbled softly.

“Shepard?”

“EDI.” Taking his mind off his strangely reacting body, he asked, “Do you have anything?”

“Of sorts. If you can get me a link to the consoles beyond that door, I might be able to find out more. But from what I gather, this facility is the Geth’s attempts to harness biotics.”

“Biotics? But Geth can’t use biotics.”

“Exactly. They saw this as a vulnerability. While they are capable engineers and infiltrators, the fact that they cannot use biotics is a weakness. In an attempt to harness this, they attempted to make themselves somewhat more like organics. This included isolating themselves from one another in secure mobile platforms.”

“I guess they thought that it was our individuality that helped give us the use of biotics.”

“That was their belief, yes.”

“So what’s with their builds and… genitals?”

“Biotics can be triggered and often enhanced through stress. I believe this research facility was built around the exploration of sexual stress as they discovered that organics with biotics often use their abilities in creative ways. Such as –”

Shepard waved his hand through the air. “I don’t need to know that, EDI. I’ll get you an uplink.”

He barged through the door just as a few more Geth platforms were making their way through from the room beyond. This laboratory appeared to be overlooking the processing plant below. His eyes widened in surprise and he momentarily lowered his gun at the sight of dozens of males of all species trapped within vats of gooey white liquid and hooked up to all sorts of machinery. One particular tube caught his attention.

“Garrus!”

The Geth advanced but he made quick work of them. They had yet to adapt to his tactic of setting their limbs on fire and forcing them to remove their hands from their faces. Once dispatched, he quickly charged to one of the consoles and waved his omnitool over it.

“EDI, uplink established.”

“Scanning through the data now. Oh and Shepard, the Normandy is on its way.”

“I suppose I couldn’t have expected anything else.”

He grunted and staggered. The sensation in his body was growing stronger and he couldn’t help but let out a soft moan. As he tried to straighten himself, he caught sight of his hand. Right before his eyes, his fingers and his palm was growing. He could feel his chest pushing up against his armour, stretching it. As he straightened in surprise, he could swear he was a little taller.

“EDI…?”

“Done. Shepard, the Geth have created some sort of formula that stimulates muscular growth in males by simulating the effects of puberty and testosterone. Further, the formula pushes the organic individual past their genetic limit. They believed that because biotics rely heavily on an organic subject’s energy reserves, building said organic to a state that surpasses their species’ limits would allow them access to biotics never before seen.”

Shepard wandered over to the glass observation windows. “So that’s why all of the men in those tubes are huge.”

“Correct. The formula has the unfortunate side-effect of also stimulating genital growth but the Geth saw this as an acceptable side-effect.”

“Did they succeed? In giving these people biotics?”

“In theory, yes. They have detected a significant increase in dark energy emissions from the individuals but the formula’s effects on their bodies were far too traumatic that most of their either lost their minds or died from the trauma.”

“Garrus!”

“He is still alive, for the most part. Unfortunately…”

“Unfortunately what?” he demanded.

“The Geth were in the midst of infecting him but because of your interruption, the process to stop his transformation was not halted before the given time. He was pumped with more formula than was necessary. Is he currently incredibly unstable and will likely not survive.”

“What?” Shepard whirled around to face the console like he was facing EDI. “There must be something we can do! I won’t lose him!”

“The Geth research considered the test subjects as expendable. They learned enough that they adapted their own designs in a similar way to the subjects but were unable to replicate biotic use yet so that is why they continued their experiments.”

“That doesn’t answer why question, EDI. Is there something we can do for Garrus?”

Suddenly, another voice came through his comms.

“Shepard.” It was short, choppy and masculine.

“Mordin.”

“Do not agree with tactics. Should have let team know instead of going on own. Though respect loyalty to paramour. Regardless, have come up with solution to current problem with captured Turian.”

Shepard rushed forward towards the console. “You have? What is it?”

“Geth hypothesis is sound. Make synthetic material more like organics to utilise biotics that only organics can use. However, they were only making superficial changes. Not integral ones. Subjects of experiment are mostly dead. Only Garrus remains alive but not for long. Formula overdose is forcibly transforming his flesh into synthetic material to make it more ‘Geth-like’. Trauma too great and will be a shock to his system. He will die if untreated.”

“What do I have to do, Mordin. And make it quick.”

“Yes, yes. Geth formula is actually a concentrated serum of nanites combined with a nutrient serum to stimulate growth. Program nanites to do something else and they will stop their assault on Garrus’ system. Perhaps even reprogram them to undo damage done. Formula was geared to both turn synthetic material into quasi-organic and organic into synthetic after all.”

“Great. How do I do that?”

EDI chimed in. “I can reprogram it, Shepard. I will need direct access to the formula vats, however, and that is in the processing plant below.”

“Sounds like a plan. I’ll get on it.”

“One moment, Shepard,” Mordin interrupted. “EDI has kindly given me your status as well.”

“What has that got to do with anything?”

“I believe you have been infected by the formula as well.”

The Geth Hulk… the one that had face-fucked him.

“Damn…” he cursed.

“Actually, not a bad thing. Consider this, Shepard, you are already partially synthetic due to Cerberus reconstruction. From EDI’s statistics on you, you are experiencing a far more stable growth compared to the other subjects. The nanites in your body are actually working very well and far less violently. In fact, you are actually enjoying this experience.”

He was glad no one was there to see him blush. “Get to the point, doctor.”

“The formula will be able to stabilise within your body given the small amount that was introduced. The Geth have not had a subject with such extensive synthetic material introduced into them. Coupled with the effects of the Lazarus project, the nanites have learned a new way of processing a subject. If you inject the formula into Garrus, I believe you will be able to stabilise him as well. Unfortunately, you will not be able to undo the changes to his system as the other alternative.”

Shepard shook his head. “So wait, you’re telling me that either I can reprogram the formula to return Garrus to his old self or I can somehow get the formula from my body to his but in doing so he’ll remain a hulk and potentially have access to biotics?”

“That is the summary of it, yes.”

Shepard glanced back down towards the lab where Garrus was struggling. The vat he was contained in was too small to hold his growing mass.

“How do I get the formula out of me into him?” he asked.

“Formula has a natural process. Change body. Discharge through genitals in an explosively euphoric way.”

Shepard staggered back incredulously. “You mean I have to fuck him?”

“Correct. Enjoy yourself. I look forward to examining Garrus afterwards regardless of your choice.”

Shepard could see more Geth Hulks were making their way out of the rear room and charging towards him. There was no time to mull over his choice, not yet. He bolted down the stairs, gun raised and popping each of the Hulks’ heads as he advanced. He passed the dead bodies of the other experiments. Many looked like they had died in the early stages of transformation while there were other tubes that had been shattered where no doubt the subjects had burst from their confines only to die from the trauma. Garrus’ body was pressed up against the glass of the vat meaning he had little time.

First thing was first. He had to stop the Geth Hulks from emerging from the back door. He rushed towards the rear doors and smashed the butt of his gun against the control panel. That done, he raised his omnitool against the divide of the portal. The precise laser blasted out from the tool and he quickly welded the door shut.

With the Hulks delayed for the moment, he immediately rushed towards Garrus. He gawked at here his partner lay. The Turian was simply monstrous and still growing. His entire left arm had become a mix of synthetic material and flesh. Quickly, he tapped at the console beside him. The tubes that were pumping Garrus full of the Geth formula retracted but it didn’t seem to stop his transformation. A few more commands and the vat straightened, rising up horizontally on some mechanical struts. The glass door hissed open and the Geth formula came gushing out around them. Garrus toppled forward, falling onto his hands and knees.

“Shepard…?” rumbled the Turian in a voice many times deeper than his old one.

“I’m here,” he soothed quietly, resting a hand onto Garrus’ back.

“Shepard. If I am to overwrite the formula in Garrus’ body, I only have a small window to do it. Link me to the chamber he was contained in and I will do the rest.”

He glanced to Garrus and then towards the vat. His partner was shivering, shuddering. The synthetic material on his arm was starting to encroach upon his back.

“EDI, Privacy Mode. No exceptions.”

There was a pause.

“Understood Shepard. The extraction team will be there in twenty minutes.”

Shepard quickly unbuckled the pants of his armour. “More than enough time.”

As EDI went silent, Shepard advanced towards Garrus. His partner looked up at him through bleary eyes.

“Shepard…?”

“Easy there,” he answered softly. Whatever the formula was doing, he could feel the heat all over his body rushing towards his crotch. Maybe it was just his hormones getting the better of him, the commander in him thinking that Garrus would make an excellent asset as a hulk or with biotics or just the formula just needing to get out of him but the desire to fuck the Turian was overwhelming.

His cock – which he thought was a little bigger than before – was already raging hard.

“I’m here to help,” he said and without ceremony, he shoved his dick right into Garrus ass.

The Turian roared, his cry shaking the entire chamber. Shepard gasped as his cock was surrounded by Garrus’ hot ass. Instincts immediately took over and he wildly pounding his dick into that muscled, Turion hole.

Garrus’ hands clawed into the hard metal beneath him, twisting the alloy while his toes raked across the floor mightily. The feeling of a cock inside of him was unfamiliar, alien, but coupled with the rush of having Shepard being the one inside of him and the ecstasy that the Geth formula filled him with, he was too overcome to resist. All he could do was squeeze his ass tight, milking the man behind him more and more, begging for the hot seed that would pour into him.

The Turian found himself hungry for the cum just like how every part of his body was hungry for more of the Geth Serum. He panted heavily, pleading loudly for Shepard to mate with him and spill that saucy seed into him. He threw his head back, letting out another earth-shattering roar as Shepard’s thrusts grew stronger and stronger, more desperate and needy. Every thrust, he felt the man he respected dig deeper and deeper into him. Eventually, Shepard’s dick had reached its limits and he lamented not having that cock dig even deeper.

Then another roar accompanied his own and at long last, he felt the flush of cum shoot into his ass. Unlike the fire of the formula, this was like the blast of cooling liquid that soothed the raging conflagration inside of him. He could feel it pouring up from his ass, seeping through his body and quickly washing through his bones, muscles, veins and organs.

The raging purplish-blue tentacles that were writing from his synthetic arm stopped their lashing and quickly receded back into his flesh. Though the glowing nodes remained, they no longer flashed and burned angrily, instead pulsating with his slowing heartbeat. The fire in his chest was soothed by the douse of Shepard’s cum and the constant need to flex, to move his muscles finally ended.

When he came, it was a gentle rush of his seed that left this body exhausted and his mind drifting off into peace and quiet thanks for the man who saved him yet again.

*******

“I can’t say I approve of your choice,” Miranda said as she paced the conference room. “But at least you saved Garrus.”

“And he’s a biotic now, apparently,” Jacob said with a shrug. “Should be interesting on the field.”

“Still somewhat unstable,” Mordin said, tapping his chin thoughtfully. “The amount of formula that Shepard ingested was not enough to fully stabilise his system. Synthetic arm and testicles now produces the formula and distributes it across his body rapidly.”

Shepard frowned. His casual attire no longer fit him. The Geth formula had affected him as well and now he stood many times larger than he once had. He had to roll up the sleeves of his Cerberus uniform so that it wasn’t chaffing his arms. The look was rather good, if he had to say so himself. His arms were never bigger. On Earth, he would be considered a bodybuilder.

“Do we need more of the formula then?” he asked.

“Not quite,” Mordin answered. “Even if we retrieved the formula, it would need to be introduced through you before it can be injected into Garrus to stabilise him again. You are in equilibrium, right now. The amount of formula was enough to turn you into a factory for the stabilising agent. Any more and we do not know the effects. Your semen is now the stabilising agent.”

Shepard lifted an eyebrow and couldn’t help but smirk a little. “So does that mean I have to keep fucking Garrus?”

“Not quite. We can extract your semen in other ways.” Mordin shrugged. “But I suspect that would be less fun. Or more. Depends on your tastes.”

“You know this means that Garrus is effectively an epidemic waiting to happen,” Miranda said. “If he so much as gets a little ‘excited’, anyone who ingests his ‘secretions’ could become infected as well. And while I admire your sexual prowess, Shepard, I highly doubt your body could produce enough ‘stabilising agent’ to keep the entire crew of the Normandy stable for very long.”

Mordin nodded in agreement. “Garrus will need a constant supply of the agent on hand in case he reaches critical mass again. Unless other arrangements can be made.” He turned to leave. “Will start studying formula to see if I can synthesis stabilising agent. May take some time.”

“Take all the time you want, doctor,” Shepard said with a faint smile.

Miranda sighed heavily and shook her head. “This is a fine mess. I better report this to the Illusive Man. Not sure how he’ll take this.”

Jacob nodded and turned to leave as well. “I’ll tell the rest of the crew to leave Garrus alone in the sick bay for now as well. And to stop gawking.”

Shepard got up from his seat and left the conference room with the others but where they all headed to their various stations, he immediately headed to his quarters. Once there, he plucked a single grey box that he had retrieved from the freighter just before they left. It was the delivery that Garrus himself had ordered and was the reason why the Turian had wanted to track down the freighter personally.

Shaking his head and with a smile, he carried the box all the way down to the sick bay. Through the windows, he could see Garrus was lying on several beds that had been pushed together to accommodate his size. Everything was cleaned off and for the first time, Shepard saw Doctor Chakwas outside of her natural habitat.

“How’s he doing, doctor?” he asked.

She gave him a faint smile. “Stable. For now. But he is constantly producing more of that formula. I suspect that within a few minutes, he will reach ‘critical mass’ as Mordin put it so politely. A good thing you came when you did.”

“Pun intended, doctor?”

She laughed softly. “If only. I’ll polarise the windows so you two will have some privacy.”

Shepard thanked the ship’s doctor. The clear glass windows instantly darkened giving no means to spy on anyone or anything inside the sick bay. With at least some privacy, he stepped past the threshold to comfort his boyfriend and squad mate. He was immediately hit by the scent of Turian musk. Ordinarily he would have found that arousing but considering his enhanced state, he found it incredibly arousing. The Cerberus-issue pants he had been given had to be shorted to shorts to accommodate his monstrous thighs and even then it left no room for his growing erection.

Fighting to maintain some degree professionalism, he headed over to where Garrus was lying on his back, staring absently at the ceiling. He wondered if any part of his partner was still in there of if there was just a horny, sex-crazed beast that – while admittedly arousing – was something that he didn’t want. He wanted Garrus.

“Hey Garrus,” he greeted. “How are you feeling?”

It was with some relief that he noticed Garrus’ eyes turn to him. “Horny, Shepard. I’m feeling horny.”

His eyes went to Garrus’ crotch which was subtly covered in a multiple sheets. One sheet could not cover his entire body so three had to be set over his torso, another over his midriff and then another over his crotch which barely reached past his thighs. “Really? Because you don’t look hard.”

“Give it a second.”

Not even a second later, a large wet spot appeared against the lower sheet. Like a snake stirring from its lair, the massive Turian mean came rising out of his crotch, tenting the sheets incredibly and making Shepard weak to the knees.

“There we go…” Garrus sighed. “You know you being here isn’t helping things.”

“What do you mean?”

“Every second in that tube was ecstasy, Shepard. But the last few moments before you freed me, all I could think of was you. How I wanted to fuck you. You standing there is taking every ounce of my will to keep myself from pouncing you and shoving this thing into your ass.” For emphasis, he shook the enormous piece of meat that had lifted the sheets off his chest by at least a foot and a half. In his hands, the tube of flesh looked like he could hold it easily but Shepard knew that it was nearly as thick as his already enhanced thighs. Getting that inside him would split him apart.

“Thing is, according to Mordin, I’m producing that formula the Geth used to turn me into this.” He gestured with his free, unmutated hand at his body. “I’m not even a Turian anymore, Shepard. I don’t cum Turian seed anymore. It’s just more of that shit.”

A well of guilt filled Shepard’s chest. “Should I have turned you back?”

Garrus shook his head. “No. You know I always trust your judgement.” He gave Shepard a lopsided, Turian smile. “Not like we could ever have kids anyway.”

The Turian grimaced loudly. A loud squishing noise like slugs grinding against one another emerged from Garrus’ left arm. Shepard, who had seen people turned into Husks by Reaper technology, winced as he approached the mutated arm. Pulsating, glowing veins began to vibrate madly. Purplish-blue tubes emerged from between the sinews of his muscled arm. It was like he had no skin at all on that arm. Just black, exposed muscles covered in pulsing veins and decorated by shining nodes that emitted the same eerie glow. Those fleshy rods waved back and forth in agitation.

“Fuck…” groaned Garrus. He tilted his head towards the far table. “Mind handing me that dispenser there, Shepard?”

He glanced over to the indicated canister. It was familiar. Mordin had extracted some of his seed after the mission considering his choice. Turning towards Garrus, he gave the Turian a lewd smile. “How about you get it straight from the source just like last time?”

Garrus laughed softly. “Don’t jerk me around, Shepard. I’m too horny to say no.”

He moved towards his partner and gently kissed his cheek just where the scar was from the time they met in Omega. “Then don’t.”

Garrus’ eyes widened and he let out a soft moan, a noise of consent.

Shepard swiftly pulled off his shirt in a practiced movement revealing the sculpted body of a human bodybuilder beneath. The Turian’s eyes ogled the muscled commander hungrily and Shepard adored that lusty look. He licked his own lips and yanked the soaked sheets off Garrus’ body. Before him stood a sight of beauty, a Turian god. At over sixteen feet made of pure muscle, Garrus was a true sight to behold. The fact that his left arm was synthetic only made him all the more sexy in the man’s eyes.

Whether it was the formula in him moving his limbs or just a willingness to be mounted again, Garrus reached down towards his thighs and pulled his legs up, exposing his needy hole to his commander. Shepard was instantly hard and he practically tore off his shorts, throwing aside the shredded fabric without caring how he would emerge from his wing of the ship. He crawled onto the beds behind Garrus and angled his dick towards the needy Turian.

“Hurry Shepard,” Garrus pleaded. “I can feel my body begging for you…”

“Easy soldier,” rumbled Shepard with a grin. “I want to enjoy this.”

His dripping cock was drawn towards the exposed hole like a steel rod to a magnet. The moment his exposed head pressed up against the warm flesh, he shuddered. The contact was electric to both of them. Both men shuddered and a blast of precum came pouring out of Shepard’s dick, carrying some of the formula that had infected him. Garrus moaned as the overriding formula, the command formula, went to work through his body. The tentacles rising from his arm stopped flailing in desperation and were instead quivering in anticipation.

The Turian moaned, begging for more. Shepard gave it to him and thrust his dick further into his mate. Being so big, the entry was easy and smooth and Shepard missed the tight embrace of Garrus’ ass around his cock the first time he had fucked the Turian. As if sensing his need, Garrus’ tight muscled ass clenched down on his member eliciting a moan from the commander.

“Ah fuck!” he moaned. His balls were eagerly churning, producing more and more of the formula in response to his own desire to blast it straight into the Turian’s ass. But where the first time he had mated with Garrus it had been out of desperation and need, this time it was for pleasure. The formula didn’t understand but it quickly learned that it could keep producing but it was not going to be expelled. Not yet.

Garrus roared as Shepard pulled out, a cry to be filled once more. So the commander ploughed into him again. The Turian’s hands clawed at the bed beneath him, tearing at the mattress. His hips bucked and when they came down again, they slammed against the beds, causing their frames to shudder and heave. Shepard pumped his dick back and forth into his partner, the need inside him growing just as Garrus’ was starting to subside with every drop of formula that was poured into the Turian.

Garrus’ eyes lost focus. His entire body quivered. Muscles that had been so tense and ready to explode were suddenly relaxing with the introduction of Shepard’s ‘command formula’. He hated the idea of being dependant on the commander for his own health but at the same time, having an excuse to drink Shepard’s cum constantly was an idea that he found incredibly arousing. He could not help but smile a little. The enormous, ungainly muscles all over his body tensed for one more second, the moment before orgasm, before he let out a loud gasp. Like a balloon that had been deflated, his muscles relaxed. He felt the tentacles sprouting from his arm that were like feelers sink back into his synthetic skin. With them, he could taste the air, taste Shepard’s desire and feel the heady musk in the air. But with the formula easing his desire, they shrank back into his flesh. In time, he knew he would be able to control them but for the moment, he was swimming in a cocktail of chemicals brought on by the neutralisation of the aggressive formula inside of him.

That gave him time to enjoy the rough fucking he was getting from his commanding officer. He was able to finally rest his legs on Shepard’s shoulders and reached down, seizing his mate’s muscular thighs and pull the human into him with his own might. He grunted with every thrust. Now the desire in his body was not for release but it was to have that hole inside him filled. Shepard’s dick was definitely bigger but it was not big enough to fill him. He lamented that he probably won’t ever find anything that would fit him unless he had something artificially manufactured but he would damn well try.

He pulled Shepard into him and he could feel the man he admired shudder with the impact. Gnashing his teeth together, he let Shepard pull away before he yanked him back, never letting the man leave him entirely. Feeling that dick tense inside of him, that living, fleshy tube, made him feel all the more alive.

“Ah yeah…” he moaned. “More, Shepard. Give me more!”

And Shepard happily complied. Even as his balls were fit to burst, growing to the size of cantaloupes smacking against Garrus’ ass, he was unwilling to unleash his payload. Not yet. The lust he felt, the desire in his body, the pleasure of having his dick enter the warm hole of Garrus’ ass, it was an experience he didn’t want to end. But with each thrust, he could feel his limits being tested.

His cock was aching, his balls were bursting and every pull from Garrus’ mighty hands was starting to squeeze down on his thighs painfully. He eventually had to let go and let out a shuddering cry. All the formula that had collected in his balls came shooting out of his dick, pouring straight into Garrus in a powerful blast that send Shepard slipping out of the Turian. But Garrus had him. He barely got an inch out of the Turian before Garrus’ huge hands pulled him in again and made sure his dick kept pumping the formula straight into the body that so desperately needed it.

Garrus moaned happily at finally being filled. His eyes fluttered shut as the chemicals in his brain quickly lulled him into a sort of meditative stasis. The two formulas in his body met, they exchanged notes, they learned, they evolved. Shepard’s command formula had found the solution to stability while Garrus was far more geared towards growth. So both worked together, flooding the Turian’s body and fixing what was broken.

The synthetic arm remained, that was unrecoverable but instead of being a tireless factory that would ceaselessly produce the Geth formula, it became a weapon. An arm stronger than any Turian could ever hope for. All formula production was linked directly to Garrus’ internalised testicles, delivery through his overgrown penis. Nerves and networks were connected straight to the Turian’s brain and as Garrus stared off blankly into space, instincts were added to his already honed combat reflexes. Suddenly, he came to know how to dial down the glowing from the nodes all over his body, how to use them sort of like an indicator to his current health and how to control the feeler-like tentacles housed within the synthetic flesh both as a weapon and as a tool. More, his gained direct control over the formula factories that were his balls. He could control the flow of the formula, control the ratio of nanites to nutrient supplement. If he wanted, he could just pump out the healthy slurry. The mystery still lay in his biotics, however. The nanites knew it was there, they knew the theory behind it but they were unsure how to use it. It was all focused in his left arm.

Garrus made a note to find a trainer in the art. Maybe Jacob…

While he was in his trance, Shepard found the need inside him mounting. He noticed that his partner had yet to orgasm and he was not about to let Garrus go without having some fun on his own. Seemingly in a trance, Shepard pulled himself out of Garrus’ grip and quickly positioned himself over the Turian’s broad chest. The huge pectorals almost acted like a cushiony saddle that he could kneel upon. He glanced behind himself at the intimidating cock that was angled at him.

He wasn’t sure how he could take it but something inside him told him that he should anyway. Little did he know that it was the formula telling him to do it. It was the next step to his evolution. The formula had been mostly perfected in Garrus. So now, it was time to get back to the perfect specimen, to the commander of the formula.

Shepard angled the monster dick towards his ass, wincing at its sheer size. It was huge and despite being pounded by the Turian many times, he had never had anything this big before. He gasped and that shock woke the Turian from his stasis.

“Shepard? What are you… oh fuck…”

“Just helping… you… urf… out.” He gave Garrus a half-grimace, half-grin, one eye shut as he pushed more of the huge dick into him. “You always got my back, after all…”

“Oh hell…” Garrus grunted and lowered his legs. With his left hand, he seized and steadied his shuddering cock while with the other, he rested it on Shepard’s chest, just above his heart. A blast of his precum went shooting into the commander, containing the refined formula.

It entered Shepard and immediately took effect.

“Fuck me…” grunted Shepard.

The formula’s priority was increasing the size of the access hole so that it could get more of itself into the commander. It joined with the existing formula within Shepard, the nanites quickly working together and pouring themselves into Shepard’s ass. His anal cavity shuddered and immediately widened. His already firm muscled buns widened, growing bigger, stronger and more flexible to allow for a firmer grip on any dicks that may enter him in the future. He moaned as the bigger ass meant that more of Garrus’ dick could enter him.

Garrus was more than willing to comply and shoved a whole foot of himself right into the waiting commander. Animalistic instincts took over and the Turian began thrusting madly, instantly filling the human on top of him to the limit. But the formula was far from done and with each thrust, Shepard’s body stretched and grew.

With one thrust, Shepard’s spine lengthened, allowing for more room to grow. His vertebrae snapped and cracked, each section growing longer and shooting blasts of pleasure throughout his entire body. His organs quickly grew and lengthened to accommodate the enormous mass that was invading him. With another thrust, Garrus’ dick pushed up against the Shepard’s insides, actually forming a rather distinct bulge out from Shepard’s stomach like there was a big baby just kicking deep inside the commander’s belly. The formula instantly compensated and hard abdominal muscles grew to consume the bulge, his belly growing longer and taut to enclose the beast writing and drooling inside of him. With a third thrust, Garrus found himself hilting into the commander with a tremendous roar. As he cried out, Shepard’s pectorals burst with enormous side. The hand that was resting on the humans’ might chest, feeling his racing heartbeat, was knocked back by the sudden burst of mass and muscle. Huge, continental shelves of muscle suddenly eclipsed Garrus’ vision of the commander’s blissful look of ecstasy. More, Shepard’s nipples, swollen and eager began pouring a thick, white liquid.

More of the formula.

Garrus thrust harder and harder and Shepard’s body responded by constantly growing. He realised he needed to coordinate with the commander, to synchronise their nanites. He looked down at Shepard’s dick, looking so miniscule in comparison to the two hulks. He couldn’t reach down to get a drink from the throbbing cock, to ingest the nanites within and get information from them

His eyes went to Shepard’s swollen nipples, oozing more of the formula down his huge, pectorals and down his beautifully sculpted ten-pack that all but consumed his belly button. It was too little and he couldn’t reach it.

No, he knew of another way to synchronise with the commander.

The tentacles from his synthetic arm woke. They slipped out, stretching towards the growing Shepard and gently caressing his muscled frame. Garrus moaned. It was like having several ultra-sensitive tongues running over the heaving, growing commander’s sweaty body. They quickly found their objectives. Two curled around each of Shepard’s nipples, teasing at the orifices there and lubricating themselves up on the formula. Then, the pushed themselves in. Shepard’s entire body went rigid and he could hear the commander’s deepening voice let out a roar of ecstasy.

Smiling at the thought of pleasuring his mate, Garrus commanded a few more tentacles towards Shepard’s head. He was unable to see his partner’s face for the moment but he could at least ‘feel’ them. He sent them on a journey across Shepard’s widened shoulders, curling around his huge, bulging arms and over the huge, hard divide that was his collar bone. He followed the delicious trail of veins that curled upwards from Shepard’s shoulders and across his corded neck that only seemed to grow thicker and thicker with each passing second. He followed the trail of that familiar strong jaw, the light stubble and finally to those familiar lips that he adored kissing. They circled those lips, asking for permission to enter and Shepard gave them permission to come aboard. Garrus smiled to himself and plunged his tentacles deep into Shepard’s throat.

He could feel the formula, the nanites, within Shepard rushing towards the sensitive feelers, eager to synchronise with him and coordinate the commander’s growth. He realised it was akin to the Geth system where they constantly shared information but didn’t care. It felt far too good. It was like being one with his partner and it felt damn good.

Eyes once more glazing over, his nanites and Shepard’s worked together to make the commander the best that he could be. Shepard’s already enormous arms bulged out, becoming bigger and longer than any human could ever dream of. If tales of supersoldiers were thrown into the net, there would be a picture of the commander on there as he breached sixteen feet tall with his immense stature and incredibly thick legs. Every muscle was highly defined, thick, succulent blue veins running across his tanned flesh artfully.

The formula asked if Shepard should get any synthetic implants but Garrus wanted to commander just as perfect and human as he was right now. Besides, he recalled Mordin’s assessment of Shepard’s body being in a sort of equilibrium of synthetic and organic. For a second, he didn’t remember hearing that from Mordin then he realised it was information taken directly from Shepard’s memories. He really was getting to know his commander better.

His thrusts grew more and more fevered as the demands for nourishment for the commander’s growing body grew more and more. His precum was thickening with those very demands and Shepard continued to grow. Garrus willingly fed him, happy that his formula was pumping out of his cock that was buried to the hilt in Shepard.

Then he felt another presence brush against his mind through the nanites. A commanding one. Shepard.

He was synchronising with the nanites too and he brought their attention to the one part of his body that had yet to grow. With an inward smile, both of them directed all their effort towards Shepard’s dick. The commander’s hips bucked, spearing himself on Garrus’ dick all the more. The pressure inside Shepard was directed towards his cock and balls. The exposed genitals grew bigger. The already huge testicles, swollen with formula broadened, increasing in size and mass until each one was the size of a man’s head with thick pumping veins covering them made to push the serum out of the commander’s dick with as much force as possible.

With the pressure building in his balls, Shepard could feel it seeping up through his cock. The flesh stretched and lengthened. Every thrust from Garrus felt like he was getting hard all over again. He was constantly edging towards release. From the crest of his mountainous pectorals, he could see his cock rising across the summit like a majestic spire piercing the heavens to the gods themselves. It rose, growing thicker and longer until it slid right over Garrus’ own pectorals. It following the valley of the Turian’s pecs and easily slipped into the waiting mouth.

“Oh fuck!” Shepard roared, his cry muffled by the tentacles shoved within his mouth. His cry shook the entire sick bay. His thrusting hips coupled with Garrus’ wild thrashing shook the bed.

A signal was shot through their linked consciousness.

Garrus was going to cum.

And so was he!

Both males suddenly went rigid. Their bodies seemed frozen for a moment, paralysed in that second just before their orgasm hit. Then, as one, every inch of their enormous, hulking bodies were wracked with spasms as their cocks erupted with pent up sexual desire. Cum – or what would pass as cum for the two men in the future – came rushing out of their cocks. Garrus poured all of his into Shepard and Shepard likewise poured everything he had in his titanic balls into Garrus. The beds beneath them shattered entirely, sending a quake throughout the entire Normandy that caused the lights to flicker.

Their fluids kept pumping into one another for what seemed like an eternity. The rush of ecstasy from the constant orgasming did not end. The only reason either of them stopped was because Garrus was starting to get uncomfortable because he had a piece of the bed jabbing his back. So as they ceased their orgasms and Garrus retracted his tentacles, the two men, still brimming with energy, lay on the ruins of the multiple beds that could not longer hold them, their massive, muscular arms wrapped around each other.

“Guess I won’t be the only freak in the universe anymore,” Garrus grunted softly, pressing his forehead against Shepard’s. “Thanks Shepard.”

“Think nothing of it,” Shepard answered with an answering smile. As he opened his eyes, he noticed the box resting right beside him. He reached for it and offered it to Garrus. “I found these by the way.”

Garrus blushed at the sight of the box. “Oh… right.” He couldn’t meet Shepard’s gaze. “Did… Did you uh… Open it?”

“I did.” Shepard opened the box. Inside, on a velvety cushion were two, golden rings. “I didn’t know Turians used rings when they proposed.”

“They don’t but know humans did so…” Garrus chuckled softly and picked up one of the rings, now looking so puny in his huge hands. “I’m going to have to get these resized.”

“Or…” Shepard grinned mischievously and reached forward, squeezing at Garrus’ dick. “We could make use of them elsewhere.”

“Oh…” The Turian grinned at him.

“So,” Shepard teased, waggling his eyebrows seductively. “Round two.”

Garrus leaned forward and kissed the man he loved. “Sure. But I’m on top this time.”

“You’ll have to wrestle me for it, Vakarian.”

“Shepard, you’re such a fucking renegade.”

*******

The entire Normandy shook once more.

Miranda shook her head in disgust. She sat in her office and had to readjust her desk as for what seemed like the hundredth time in the last three days, Garrus and Shepard were at it again. They hadn’t left the sick bay in that entire time claiming they needed to ‘stabilise one another’. With her office right across the mess hall to the two, it was hard to get any work done.

“Are they still at it?”

Mordin stood a short distance away. “Of course. Increased physical structure naturally causes an increase in stamina. Their consumption of food is much higher. However, they secrete less waste. Believe the nanites in their bodies have optimised their digestive systems to consume and reconstitute even normally inedible by products of food they devour into usable fuel.”

She frowned at that. “So you’re telling me they could eat metal or even radioactive waste and…”

“The nanites would find some way to adapt that into nourishment for their bodies. Yes.”

“God… They’re monsters.”

“Not so. Top of evolutionary line. Evolved. Perfect hybridisation of organic and synthetic. Physical and mental. Muscle and biotic.”

“So they’re unstoppable.”

The Salarian shook his head. “Not so. Need a proportionate amount of food to fuel them and restrictions still on the structure of their jaws and teeth. Cannot eat hull, for instance. Will still need edible food. Preferably cooked as will take time to properly process uncooked meat to free it of bacteria. Flesh still very much vulnerable to bullet fire though dense muscle structure does offer some degree of padding still organic. Will bleed. Cranial damage also fatal much like Geth Hulks. Cellular regeneration increased, of course, but fatal damage is still…” He paused to take a breath. Then with utmost seriousness that chilled the entire room, he finished with, “… death.”

Miranda mulled this over. Having two supersoldiers at their disposal was certainly a benefit against the Collectors and maybe even the Reapers. But it was like having to train children again. Plus, they were unsure about the infectivity of these two.

“What are the risks of the rest of the crew being infected?”

“Female populace likely at lower risk but not sure. Sexual preferences of the two subjects likely drives the intelligence of their nanites. Male crew at greater risk. Will not become unstable like Garrus, initially, though. Combination of Shepard’s ‘command formula’ mixed with Garrus’ has stabilised it and made it a rather fascinating mutagen. Any infected will undergo transformations similar to Garrus, likely spouting synthetic materials unique to their biology and experience. Perhaps even enhance biotics. Not sure. Have not had chance to test.”

“I see.” Miranda inclined her head to the side. “What do you propose then, doctor?”

“We have seen effect on Turian and human biology. Shepard does not have innate biotics however. Would be interested to see how formula would do with a natural biotic. Perhaps Jacob would be willing to volunteer.”

“I’m sure I could convince him.”

“Krogan also have a large number of sexual organs and higher regenerative properties. Formula on a ‘perfect’ subject such as Grunt would be highly interesting. Human with genetic flaws such as Mr. Morneau would also be a case study worth investigating.”

Miranda straightened in her chair just as the ship shook once more. “Provided we can convince those two to stop making the damn ship shake!”

Mordin brought up his omnitool and tapped a few buttons. “Highly potent gaseous sleeping agent. Developed it just for the occasion. Should neutralise those two long enough for everyone to get some sleep.” He gave Miranda a faint smile. “Even Salarians need to sleep.”

She sighed softly and gave the doctor an appreciative smile. “Thank you, doctor. I’ll take your proposals to the Illusive Man considering how Shepard is currently… indisposed.”

Mordin turned and waved a hand over his shoulder. “Will draw up testing parameters. Have it on your desk tomorrow.”

“Thank you, doctor.”