Oroku Saki, better known as the Shredder, is one of two main antagonists (alongside Krang) of the 1987 Teenage Mutant Ninja Turtles cartoon series and the fifth and final season of the 2012 Teenage Mutant Ninja Turtles series. He also appears as one of the two central antagonists (alongside Krang) in the 2003 Teenage Mutant Ninja Turtlesmovie finale Turtles Forever.
He is the leader of the Foot Clan and the partner of Krang, working with him in order to conquer the world and destroy the Teenage Mutant Ninja Turtles. He is also the archenemy of Splinter and the Turtles, and the one responsible for their mutations.
He is currently voiced by Jim Cummings.