Rairaiken: The crimson-colored lion-like Yoma servant of Maki who is more strongest than Raiken but since he is not created from an Engine Cast, he is not able to assume a vehicle form like the similar-looking Raiken. He wielded a kusarigama. He enlarged in a process called Fukoku Kyohei with Bikkurium. After Maki's death, he later arrives in Human World to take the small Engine Sword and use Engine Dai-Shogun for evil. However, the Go-ongers ruined their plan and he and Gokumaru are destroyed by Engine Dai-Shogun.