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Two Turtles in a Pond (TMNT, 2014)

It is spike and he has drank the mutagen and the two flea into the city. wanting to have ralph to himself, spike, or now slash, attacks ralph's brothers one by one.

Gay, M/M, Rapheal, tmnt

Dregs of Hummanity (extreme)

It appears as of this moment, six cities have been attacked using a concentrated release of a mutagenic compound. experts cannot say for certain which mutagen was being used and we will bring you more information s it arises."

Anal, Apartment complex, Epidemic, Filth, Gay, Grunge, Hog, M/M, M/M/M/M/M, M/solo, Messy, Mud, Obese, Oral, Orgy, Pig, Quarantine, Scat, Sex, Slime, Slop, Terrorist attack, Toilet, Transformation, Weight Gain, dirty, nasty, shit, swine

Arwing Archives 3

"i injected you with a special mutagenic compound...something we refined on the fox bitch you so graciously sent us," he continued to grope her magnificent tits, sending her into near convulsions of pleasure.

Anal, Deep Penetration, Doberman, Domination/Submission, Horse, Oral, Rape, Vaginal

Turtle Power [COM]

mutagen was a funky compound that raphael knew very little about.

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

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

Testing Joy

What first appeared to be a junkie taking their next hit, was her trying out the latest in mutagen product. but to say the two were completely different may be a mistake.

Annoyeddragon, Female, Human, Lizard, Mutagen, Paint, Ranft, Recreational, Skin, Skink, Skinned, Transformation, Women, adf, experiment, fem, tf, transform

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

Escaping/A Flood or two

"yes it is a drug that increases sex drive, and causes your sperm to be mutagenic; the rockets were experimenting on us with it." "... i'm sorry i doubted you ryan" ben said.

Anal, Drugs, Growth, M/M/M, NC, Oral, Plot Development, Pokemon, Violence

The Karn Dominion, The Hybrid War, Specimen 224

Initiate the immediate production of this strain of the mutagen virus. it will be deployed with the other mutagens we have chosen in two weeks time.

Alien, Draft Horse, Human, M/F, Science, Transformation

The World's Faul - Ch. 3

"well, that's what the mutagen was supposed to do. i think that if you eat... you grow bigger." "and it's a shame... i feel hungry again."

Dragon, Fat, Food, Hyper, Male, Sex, Weight Gain

Embrace of the Rexinnae

Apro moaned out and gritted his sharp teeth together as the mutagenic fluid ate into his own flesh.

Assimilation, Bodyhorror, Dinosaur, Encasement, Growth, Insect, Mind Control, Musclegut, Rexinnae, Transformation, dino, hive, parasite, symbiote, tyrannosaur

The Latex Drug 1

"um...gimme a little bit of the mutagenic stuff, too. does that, um..." she gestured down at her hips, squeezing upwards as if shifting her bodymass. the mouse chuckled. "yep.

Arcanine, Body paint, Club, Conversion, Corruption, Exhibitionism, F/solo, Horny, Latex, Latex tf, Latex transformation, Locker Room, Nudity, Paint, Pokemon, Rubber, Series, Skin to latex, Submission, Transformation, Various Species, Voyeurism, Wet, sensitive