Krang has created a new, unstable form of mutagen that accidentally turns a delivery boy into a grotesque new mutant.
Tropes
- Freak Lab Accident: Seymour turning into Mutagen Man was him literally falling into a vat of the stuff.
- Pun: Mutagen Man's original name was "Seymour Gutz", made all the more ironic when's he's mutated into a literal blob of organs.
- Too Dumb to Live: Seymour confuses Shredder's warehouse lair for a flower-shop and finds himself on the top floor because he has a bad sense of direction.
- Voluntary Shapeshifting: Mutagen Man's unique ability is that he can replicate anyone's appearance for at least a few minutes.
