Schroeder

Shredder was the most powerful of the Foot Clan. He trained his people to be ninjas.
He was the sworn enemy of the Teenage Mutant Ninja Turtles. You accidentally entered his room through a portal that suddenly appeared beneath you, where he sat on his throne. He was cruel and killed everyone who stood in his way, sparing no one. He trusted no one. He was the strongest and most powerful.