Help Settings

Agent Epsilon

The mutagen was getting pumped into his body whether he liked it or not, and as the chemicals hit his brain, he was starting to like it.

Captive, Cunt Boy, English bull terrier, Gay, Horns, Hyper, Kidnapping, M/M, Monster, Mutant, Pussy, Vagina, Vaginal, beast, cboy, dripping, experiment, hell hound, hellhound, spikes

Annexation, Part 2

The first few muzzle-fulls of mutagenic ejaculate were enough to change gerald completely, making his body swiftly grow to match the size of his brother.

Bondage, Dinosaur, Forcedshifting, Human, Hypnosis, Incest, Kobold, M/M, M/M/M, Magic, Mind Control, Musk, Orgy, Raptor, Straight-to-Gay, Transformation

Mutagenic Madness [PTRN][RWD]

He'd been in the middle of the pack as the mutagen slammed into the five of them, though he remembered that he surprisingly hadn't been washed away in the flood.

Galactic, Gay, Giga-macro, Growth, Leonardo, Macro, Male, Master Splinter, Multiversal, Muscle, Muscle Growth, Muscles, Rat, Tera-Macro, Turtle, donatello, michelangelo, muscular, raphael, splinter, tmnt, universal

Do You Want to be an Amazon? Ch2

Aside from the lung deflating horse cock, the fist crushing pussy, and the spine snapping thighs, that much mutagenic virus had really unpredictable outcomes. and they weren't easily able to be reversed.

Abs, Adorable, Adult, Adult Content, Alternate Reality, Alternate Society, Amazon, Anthro, Aphrodisiac, Aroused, Ass, Athlete, Athletic, Athletics, Ball Growth, Balls, Barefoot, Big Boobs, Big Tits, Bisexual, Blush, Boobs, Booty, Breast, Breastfeeding, Breasts, Buff, Bulge, Busty, Camping, Chemical Use, Choker, Clit, Clitoris, Cock, Cock Growth, Cuddle, Cuddling, Cum, Cumming, Dick, Domination/Submission, Dungeon, Ejaculation, Equine, Erection, Exhibitionism, Explicit, Eyes, F/Herm, Female, Female Ejaculation, Futa, Futanari, Gender Shifting, Gender Transformation, Grin, Grinning, Growth, Hard-On, Hermaphrodite, Hyper, Hyperphallic, Hypertrophia, Jockstrap, Kissing, Lactation, Laugh, Leather, Legs, Lingerie, Locker Room, Lust, Masturbation, Milking, Muscle, Muscle Growth, Muscle Worship, Muscles, Mutant, Naked, Nipples, Nude, Nudity, Omnisexual, Orgasm, Pansexual, Penis, Pheromones, Pre, Pussy, Sheath, Shemale, Shower, Size Difference, Size Queen, Striptease, Submissive, Thong, Tight Clothes, Tits, Topless, Training, Transformation, Vulva, Warrior, intersex

Interview with a post-human, the early years

Red is not a natural colour, but we recognise that it is down to individual preference when someone gets a mutagen to turn their natural hair colour red.

Annoyeddragon, Human, Male, Mutagen, Transformation, Transhumanism, adf, guy, interview, post, rich, tf, transform

Epsilon Labs

As luna rounds the corner shi smiles as hir eyes find the hu'un mutagen proliferator.

Aliens, Dog, Domination/Submission, Dragon, Ejaculation, Female, Hermaphrodite, Lizard, Male, Master/Slave, Sci-Fi, Sex, Shark, Size Difference, Story Progression, Story Series, Tiger, Vaginal, Wolf, h/h, manta ray

The Le Carde Interview (Art Bell Gets His Money's Worth, Part III)

He was also given exposure to the mutagenic serum, elixir b. the first day he experienced enhanced strength, ah...

Arthropod, Breeding, Cum, Dulce Base, Hermaphrodite, Horror, Hybrid, Impregnation, Insect, M/M, Male, Male Pregnancy, Muscle Growth, Oviposition, Spooge, Transformation, conspiracy, new mexico, termite

An Atavistic Advantage

He has always been a well endowed male of his species, but this mutagenic ly really is the ultimate enhancement drug.

Autofellatio, Crocodile, Dragon, Fox, Gay, German Shepherd, Handjob, Hybrid, Hyperphallic, Laboratory, M/M, M/solo, Macro, Masturbation, Muscle Growth, Mutation, Science Fiction, Tiger, Transformation, Various Species, Vore (soft), Voyeurism, Wolf, cockvore, iscin

The Aftermath

Viper briefly took callie hostage, grabbing her with his tail and threatening to pour the mutagen onto her unless the two vigilantes backed off.

Dr. Zyme, Dr. viper, Fanfiction, Feline, Mutant, No-Yiff, Rule 34, Snake, SwatKats

On the Cusp - Chpt. 5: Working Theory

"to be completely sure that the mutagen won't react to you, we need to test if it reacts to the blood circulating within your system. i'll be injecting you with a large amount of the mutagen, just like i did with the serum.

2k14, 2k16, Bayverse, Brothers, Casey, Casey Jones, Eventual anal, Eventual rimming, Eventually, Except theyre not teenagers anymore, Gay, Incest, Leonardo, Love, Lovers, M/M, M/M/M, M/M/M/M, M/M/M/M/M, Rimming, Romance, Sex, Tcest, Transformation, Turtlecest, donatello, jokes, michelangelo, raphael, splinter, teenage mutant ninja turtles, tf, tmnt, universe

Do You Want to be an Amazon?

Garth blinked, as he felt the chair start up again, releasing the final mutagenic load into his body.

Abs, Adult, Adult Content, Alternate Society, Amazon, Aphrodisiac, Aroused, Ass, Athlete, Autofellatio, Ball Growth, Balls, Big Boobs, Big Tits, Bisexual, Biting, Boobjob, Boobs, Breast Growth, Breastplay, Breasts, Buff, Bulge, Busty, Butt, Clit, Clitoris, Cock, Cock Growth, Cock Transformation, Consensual, Cowgirl, Cum, Cumming, Cumshot, Dick, Exhibitionism, Explicit, Frottage, Futa, Futanari, Gender Shifting, Gender Transformation, Growth, Herm/solo, Hermaphrodite, Hyper, Lactation, Legs, M/Herm, Medical Procedures, Milk, Muscle, Muscle Growth, Muscles, Musk, Naked, Nipples, Nude, Nudity, Omnisexual, Orgasm, Pansexual, Penis, Pheromones, Public, Sheath, Tight Clothes, Tit Fuck, Topless, Transformation, Underwear, intersex

Making of a Burd Part 4: Bonding Burd

He has the ability to manufacture both the mutagen that makes us and the hormones that maintain our form.""so he's the one that did this to me?"

Anthro, Avian, Bald Eagle, Captivity, Cloacal Sex, Cum, Feral, Gay, Love, M/M, Masturbation, Oral, Rimming, Transformation, bird, cloaca, fluids, sex, vent