"I am a genius!"
Dr. Buttocks is the Netherworld's greatest evil scientist with an ego rivaling that of Betrayus and is Butt-ler's twin brother. He specializes in inventing evil gadgets with his superior intellect, which he never passes up an opportunity to brag about. He is one of the main villains in Pac-Man and the Ghostly Adventures. He hates his twin brother, Butt-ler. (And the feeling is mutual) He finds out the Ghost Gang are working with Pac-Man, but he has yet to gather enough evidence to prove it to Betrayus. His ego and arrogance is eclipsed only by Betrayus. Buttocks wears a mechanical claw on one arm.
He is voiced by Brian Drummond (who also plays Clyde and Butt-ler) with a hint of a French or German accent. Which is odd considering Butt-ler has a British accent.
- His eyes are notably tinier than an average Ghosts. And when eaten, his glasses will accompany them.
- He occasonally will appear to be wall-eyed (Or in internet terms, "Derp-faced") when he's on screen, whether this was intentional or a animation error is unkown.
- According to Butt-ler, their mother hated them both, but she hated Buttocks even more.
- Despite their rivalry, Butt-ler and Buttocks are able to get along from time to time. They once teamed up to get revenge on Betrayus for his abuse and they also agreed not to help him when he was buried under a huge pile of sand.