Originally one of Neptune King's Perfect Choujin. He was a bounty hunter for the Choujin Enma who retrieved choujin who escaped from hell, including Screw Kid, Junkman, Atlantis, Sunshine and Sneagator. During the Survivor Match for the Kinniku Throne, he was involved in another such mission to retrieve Neptuneman. While on Earth, he joined Kinnikuman Super Phoenix's team. Omegaman defeated Geronimo with the Omega Catastrophe Drop which resulted in a tag match, Neptuneman and Kinnikuman vs. Omegaman and Super Phoenix. The match was for each person's page in the Muscle Prophecy book. The pages were tied to a string which hung over a torch. Neptuneman ended up losing his page and dying. This pitted Kinnikuman and Omegaman against each other. Omegaman used his Omega Metamorphosis technique wh