He was the professor's assistant, but as his brain grew larger, he was reborn as a genius(?) evil monkey.

His goal is to completely conquer Townsville, but he gets frustrated after being subdued by the Powerpuff Girls every time.

He often repeats simple words, but sometimes speaks fast without even breathing; his rough voice fits the villain image. Will the day come when he eliminates the Powerpuff Girls and takes over Townsville?