Krang has all the brains a body could want - unfortunately; he ain't got no body! He is; however; the mastermind behind Shredder and the Foot Clan. Krang's ranting; burbling; chortling; raving antics are a few of the reasons he was banished from his home-sweet-home of Dimension X. Now; Krang brings his smarty-pants attitude to the decent planet Earth; where law-abiding citizens are threatened by his supreme intelligence. Krang also supplies Shredder with his controversial Retromutagen; the transformation substance that's instrumental in their conquests. Krang's tentacles allow him to wrestle with his biggest headache; the Turtles; who pose a threat to his global dominance!