ヤイバ

Yaiba is a Fox Mumon, and is the bassist of the band ShinganCrimsonZ. He has huge respect to the way of the Bushido and the Rock Spirit, and considers himself to be a samurai. He is very timid and somehow gets into fights with both Crow and Aion. He wields the "Ryuukenden" bass.

(Source: Show By Rock!! Wikia)