The Giant Robot Ghost Monster, a giant robot at least 50 feet tall (and closer to 100 feet), was built by Mezmeron and his Ghost Monsters in order to terrorize the citizens of Pac-Land into telling them the location of the forest of trees that grew Power Pellets. The giant robot had two weapons: a set of metal jaws used for chomping attacks, and a giant horn. The Robot Ghost Monster moved along on a tank-like chasis with a pair of treads.