Geiger Rock Gelvar

One of the Rock Superhuman Geiger Rock. Aiming for the underground resources sleeping in the ruins of Zoran, the hometown of the Rock Superhumans, he attacked the same Rock Superhumans. He has Alpha-energy that pairs with the Beta-energy of Devil Rock Clay. When the Alpha-beam is emitted from a weapon like a fan, the Machine Robo will be paralyzed, but when combined with the Beta-beam, he becomes an energy bullet that destroys all matter. After being defeated in a battle with Vikung Fu, he was devoured by a man-eating flower.