Teenage Mutant Ninja Turtles II: The Secret of the Ooze is a 1991 American superhero action comedy film based on the Teenage Mutant Ninja Turtles characters created by Kevin Eastman and Peter Laird. Directed by Michael Pressman and written by Todd W. Langen, it is the second installment in the original Turtles film trilogy and the sequel to Teenage Mutant Ninja Turtles (1990). It stars Paige Turco and David Warner, with the voices of Brian Tochi, Robbie Rist, Adam Carl, and Laurie Faso. Resuming from the events of the first film, the Shredder returns at command of the Foot Clan for revenge on the Turtles. When he learns the secret behind the Turtles' mutation, he becomes more dangerous than ever. The film reveals the origins of Splinter and the Turtles and introduces two new villains, Tokka and Rahzar. Unlike the first film, the Turtles mostly fight bare-fisted, to tone down the violence.

Teenage Mutant Ninja Turtles, commonly abbreviated as TMNT, is a media franchise created by the comic book artists Kevin Eastman and Peter Laird. It follows Leonardo, Donatello, Raphael and Michelangelo, four anthropomorphic turtle brothers trained in ninjutsu who fight evil in New York City. Supporting characters include the turtles' sensei, a rat called Splinter, their human friends April O'Neil and Casey Jones, and enemies such as Baxter Stockman, Krang, and their archenemy, the Shredder.