Mojo Jojo is a diabolical gadgeteer bent on world domination. The accident he caused that gave him the supreme genius he has today is also responsible for the birth of his arch-enemies, the Powerpuff Girls. Mojo Jojo is a scientific genius that uses his twisted simian mind to create the most powerful devices and robots that he can muster to destroy the girls. When he's not being devious and bent on world domination, Mojo Jojo is a sophisticated chimpanzee, and is quite friendly and polite. He is nevertheless persistent in his endeavors; Mojo Jojo has set up his lair at the top of the dormant volcano in the center of the city. Using his supreme intellect, he plots to defeat the Powerpuff Girls, take over the City, and then take over the World (in that order)!