Shredder

The Shredder (Oroku Saki) is a fictional character and primary antagonist of the Teenage Mutant Ninja Turtles comics and all related media. At one point or another in every incarnation of the TMNT stories, he has been the archenemy of Splinter and the Turtles. He is also known as the leader of the New York City branch of the Foot Clan.