Lio Bomber is the leader of the Bombers group of the Brave Express Team, along with Bird Bomber, Dino Bomber and Horn Bomber. He can combine with Bird and Dino to form Try Bomber, then additionally combine with Horn to form Battle Bomber.

Lio Bomber is the leader of the Bombers, with his primary mode being a 200 Shinkansen Series Type 2000 bullet train, and an alternate mode being a lion. His former name was "Yamabiko Bomber".

The Bombers made their first appearance in episode 2, assisting Might Gaine to defeat Hoi Kow Lou's robots by combining into Try Bomber.