Donatello, nicknamed Don or Donnie/Donny, is a superhero and one of the four main characters of the Teenage Mutant Ninja Turtles comics and all related media. He is the smartest and often gentlest of his brothers, wearing a purple mask over his eyes. He wields a bō staff, his primary signature weapon in all media.

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.