Krang

Krang is a supervillain who appears in Teenage Mutant Ninja Turtles-related media. He first appeared in the 1987 animated series and has since been featured in comics, video games, and other merchandise. Krang is a member of the Utroms, a race of aliens who have been living on Earth in secret. He is a brilliant scientist and engineer who uses his knowledge to create advanced technology for the Shredder, the main villain of the Teenage Mutant Ninja Turtles. In the 2012 series, Krang is the leader of a rogue faction of Utroms known as "the Kraang." He is also known as Kraang Prime. In Rise of the TMNT: The Movie, Krang is referred to as Krang Leader (credited as Krang One), who leads his siblings, Krang Sister (credited as Krang Two) and Krang Brother.