Oroku Saki (Earth-5584)

Oroku Saki (a.k.a. Shredder) is a master of Ninjutsu and the leader of the Foot Clan. He was once friends with Splinter's sensei, Hamato Yoshi, but tensions rose between them for the love of Tang Shen, resulting in the deaths of both Yoshi and Shen at the hands of the Shredder.