It's 2010, and mechas have already replaced cars and trucks as the primary mode of transport, saving the world from global warming. Some robots have been altered for a sport called Mechabattling. One such robot is Raywinger.
USoBu is a team name formed from its members' surnames Ukita, Hosokawa, and Kagabu.
- Isamu Ukita: The main character and leader of team USoBu. Typical super robot pilot, full of energy and confidence.
- Jiro Hosokawa: Isamu's best friend. Like Daigo from BanBanBan, he enjoys music from America, except for him it's rock and roll, especially Queen.
- Mihoko Kagabu: The mandatory female member of Team USoBu. She is a big-time tomboy and she loves to work on robots.
Tsume means claw, reflecting its robots' beast motifs.
- Tesshou Tora: Leader of Team MetalTsume. He is very mysterious. But we do know that he despises Kenta very much.
- Kenta Zou: Loud and energetic. His catchphrase is "3...2...1...HYKEEBA!" Tesshou despises him very much.