Yusuke Onodera/Kamen Rider Kuuga

Yusuke Onodera (小野寺 ユウスケ Onodera Yusuke) is the resident of the World of Kuuga in Kamen Rider Decade. He has a very self-confident and gullible child-like personality, a stark contrast to the original incarnation of Kuuga, Yusuke Godai.

Yusuke supports the police in fighting the Gurongi and has feelings for Detective Ai Yashiro, as he fights to see her smile. When Yusuke first discovered the Arcle Belt, he was warned of Decade's existence as the "devil" by Narutaki.

Yusuke rarely engages in battle while journeying with Tsukasa. He does, however, act as a inspirational figure to the other Riders, as can be seen with his aiding of Wataru, as well as his actions in the other Riders' worlds. While traveling with Tsukasa, he acts as his personal assistant.