Grindatron

Grindatron is a giant robot created by Dr. Buttocks to drain the power from Pacopolis. Grindatron bears the resemblance of Pacman's Grinder. Pacman eats a brain berry to become smart enough to build another giant robot to counter Grindatron. Even when the brain berry powers wore off Pacman manages to outsmart Dr. Buttocks and his creation. Grindatron also appears in the video game Pacman and the Ghostly Adventures 2.