Leatherhead
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- Leatherhead
- Mutated into a humanoid after swimming through a mutagen contaminated swamp
- Enslaved the Punk Frog until they were rescued by the Ninja Turtles
- Went to New York City to get revenge on them, captured by the Rat King
- Freed himself & partnered with the Rat King to eliminate the Turtles, was defeated
- Okefenokee Swamp, Florida, USA, Earth
- Jim Cummings (TMNT 1987)
- Mutant