Joker (Batman vs. Teenage Mutant Ninja Turtles)

The Joker is a criminal mastermind operating in Gotham City, and the archnemesis of Batman in the movie Batman vs. Teenage Mutant Ninja Turtles. He is a dangerous psychopath who was badly disfigured after falling into a vat of chemicals at Ace Chemicals, and at some point before the movie was apprehended and imprisoned in Arkham Asylum.