Oroku Saki, better known as the Shredder, is the primary antagonist in the Teenage Mutant Ninja Turtles series. He is the ruthless leader of the Foot Clan, a criminal ninja organization. Driven by a personal vendetta against Splinter and the turtles, Shredder is a skilled martial artist, tactician, and master of ninjutsu. His iconic armor, bladed gauntlets, and helmet make him a formidable foe. As the turtles' archenemy, Shredder orchestrates various schemes to defeat them and seize control of the city.