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. The franchise encompasses printed media, television series', feature films, video games, and merchandise. The franchise began as a comic book, Teenage Mutant Ninja Turtles, which Eastman and Laird conceived as a parody of elements popular in superhero comics at the time.
https://en.wikipedia.org/wiki/Teenage_Mutant_Ninja_Turtles