Biohazard, A Snake's Tale
The snake wasn't really sick, but it was infested with the mutagen and the goo that it thrived in.
Request/Trade story - Juno's Story
"because mutagen transformations don't work when there is already a mutagen active". his comment left me confused. had he already infected me and the results were delayed?
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.
Tales From Switch City: Jimmy's Tale
mutagen tried. "my mother is in another universe." jimmy retorted. "well- then um..." dr. mutagen tried to think hard. he was good at building machines, not managing children. he thought this would be simple.
The Karn Dominion, The Hybrid War, Contact and Assesment
The various mutagen viruses were produced in the required amounts and the dispersal probes were readied and programmed.
The Karn Dominion, The Hybrid War, Suzy Gets a Foal
They did not invade by force of arms, but instead used incredibly advanced biotechnology in the form of mutagen viruses to transform the intelligent species of a world into new animal hybrids that would be useful to the colonists.
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.
FantastaGirl: Origin
Our own company wouldn't care who got the mutagens, only that they could retire overnight with the profits.
Team Argos, Book 1: The Unveiling Prologue
Laboratories safeguards confining bio-engineered viruses, weapons, and mutagens were eradicated, causing them to be released. there was widespread death as people's immune systems couldn't keep up with the barrage of attacks.
Skank Into Stink-Beast: Second Metamorphosis
Still, she could feel his pulse increasing, his breaths laboring as the mutagen attacked him--drew his nose out painfully and at once, whiskers prickling and already too-sensitive to the grass and weeds his face was shoved into.
Isolation-Excerpt 6-Survivors
"a gene mutagen that never should have been developed in the first place", allen said, "it leads to extreme mutations in anything it touches and in many cases death of the subject. it's what made the skins so dangerous and damn near unkillable.
Kaiju Chaos; Manual.
Scientific kaiju can be summoned, or created using mechanical science or mutagenic science.