The antagonist characters of Exkaiser who pit their fused monsters of the day against the space police. They are, themselves, living robots of the same type. * Dino Geist: Leader of the Geisters. He transforms into either an allosaurus-like dinosaur, or a jet for his bestial and transportation forms respectively. * Mad Geister: The fused form of Horn, Armor, Ptera, and Thunder Geists. * Hormor Geist: The fusion of Horn & Armor Geists. * Horn Geist: Assumes a triceratops. Based off the Transformer Slag. * Armor Geist: Assumes a stegosaurus. Based off the Transformer Snarl. * Pteder Geist: The fusion of Ptera & Thunder Geists that resembles a winged centaur. * Ptera Geist: Assumes a pteranodon. Based on the Transformer Swoop. * Thunder Geist: Assumes a brontos