The dossier
Genius trapped inside a repeating plan
Mojo Jojo is Professor Utonium's former laboratory chimpanzee and the Powerpuff Girls' most persistent enemy. Chemical X enlarges his brain and grants him advanced intelligence. He uses that intellect to build weapons, robots, and elaborate schemes against Townsville.
His history connects him directly to the accident that creates the girls. That link turns each battle into a warped family dispute between rejected experiment and celebrated successors. Mojo can diagnose his failures, yet pride sends him back toward the same goal of conquest.
Roger L. Jackson builds the character through precise repetition and grand, circular speeches. The voice makes every simple intention sound like a formal declaration. Viewers remember Mojo because his theatrical language remains funny even when his machines create real danger.