The Spill
Stimulated by their intense sexual pleasure the mutagens began to enter the next stage.
The Resort
Apparently, some scientist somewhere had discovered a mutagen that worked on humans, to transform them into radically different shapes. it was still under research, and it’d be years before proper human testing could even begin.
Last Days of the VSC Steadfast [Mini-Fic]
Her mouth hangs open - and be it the irritation of the mutagen or her coughing fit, it feels noticeably more... wet.
An Inner Impulse Rent the Veil: Movement One
"i have discovered the mutagen is progressive."
No Chance, Ch 19
Unlike the others, courtney did not have first-hand contact with whatever the mutagenic serum had been.
Turtle Power [COM]
mutagen was a funky compound that raphael knew very little about.
Exposing One's True Spots (Panther TF)
They blackmailed me...they have a mutagenic formula too! it's less refined...they would have injected my family shawn! i didn't have a choice!"
An Experimental Treatment
The sweet relief from all the discomfort as they finally did what they’d wanted to ever since they were first inoculated with frankie’s mutagenic virus. the slick girth sliding into him made frankie moan out with dissolute, blissful relief.
Little Goblins
Surely, the goblins had a cure to their mutagen. she just had to find it in time. she could already feel her body shrinking in size. just as zyphari stepped inside, she felt her pants drop down.
[Kraskits - Species Bio]
This makes them immune to many forms of radiation damage and mutagenics. this also means that without the unlock sequence, further cloning and growth of the species via artificial means is impossible.
Syngeneia Kathairein part 40
You fly over the dam. there is some sort of factory connected to it. a canal channels away alot of mutagenic goop similar to what you saw in that lake and the factory seems to be fed by fresh water. ''they built a factory here? '' you ask.
A Dangerous Mishap - I-Rex TF
He huffed as he kept thrusting in, his ass becoming muscular as a thick, muscular tail grew out above it, bit by bit, the new nerves driving the changing man wild as his mutagenic pre seeped into eli's ass.