Degawa is a soldier of A.I.M.S. tasked with hunting down any remaining active HumaGears and a supporting antagonist in Kamen Rider Zero-One. He is armed with a RaidRiser that allows him to become the Invading Horseshoe Crab Raider.
He is portrayed by Kazuya Okada.
When Hiden Manufacturing repaired the fashion model HumaGear Delmo for a runway show, Degawa and Shida accompanied Yua on A.I.M.S.'s attack on Hiden Manufacturing. While at first they were able to overpower Zero-One with assistance from Kamen Rider Vulcan Assault Wolf, who had become possessed by Naki, Kamen Rider Jin Burning Falcon suddenly arrived and assisted Zero-One in driving away the A.I.M.S. forces.