Teenage Mutant Ninja Turtles (1987): Season 5, Episode 5 - ProjectFreeTV

5 - 5: Enter Mutagen Man

A delivery boy accidentally falls into Krang's new unstable Mutagen and becomes able to transform into anyone he chooses. Shredder tricks him into helping him launch the Mutagen into space and mutate the world, but this "Mutagen Man" has other ideas.