ArigiThunder: An ant monster. He was a former street boxer who was tempted to beocme a cyborg under promises of power from Megaru Shogun. His plan was to kidnap children with a brain wave pattern that synchronizes with a living computer program created by captured scientist Dr. Yamazaki so that Dogma could hypnotically control all the children in the world. His right hand is a giant mace that easily smashes through brick walls and he can spray green formic acid from his antennae. He also assumes a boxer stance while fighting and has near impenetrable amor. Super-1 weakens his armor by heating it with his Hot/Cold Hand (flamethrower) and letting Arigisandaa's minions douse it with water causing it to crack from rapid cooling. He is then destroyed by an onslaught of Super-1's Super Rider Double Kick, Super Rider Forward Roll Kick, and finally Super-1's Super Rider Sun Kick.
He was later revived as part of the Dogma Revenge Corps and destroyed by Kamen Rider X.