Shredder

"The Shredder" is the main villain in most Teenage Mutant Ninja Turtles media, and has a lot in common with Darth Vader. In most media he is depicted as the leader of The Foot Clan and his relation to Splinter the rat as enemies, and that Splinter raced the turtles that like him are Mutants, thanks to ooze. The turtles fight The Shredder quite a bit.