Mojo Jojo was Professor Utonium's reckless laboratory assistant, Jojo, before Professor Utonium created the Powerpuff Girls, the same accident that created the Girls gave Jojo his super-intelligence. He is the Powerpuff Girls' most frequent villain who wears a white glass dome-shaped helmet that covers his oversized, protruding brain. This is the FIRST APPEARANCE of this character in premium digital format. This series is available in the China region. Powerpuff Girls and all related characters and elements as well as all other Cartoon Network characters and related elements are trademarks of and © Cartoon Network.