Yoichi Daimon is a scientist who was recruited by Gorgom to create the Road Sector before the Three High Priests gave orders for mass production for their plans of world conquest. Convinced that the bike shouldn't used for evil means, he hid it in a safe place. When Gorgom discovered it, they sent the Bat Mutant to kill him and Hotaru, wife of his son Akira Daimon.