Go·Badaa·Ba (ゴ・バダー・バ, Go Badā Ba), otherwise known to the police as Unidentified Lifeform #41 (未確認生命体第４１号, Mikakunin Seimeitai Dai Yonjūichigō) and B8 (Ｂ群８号, Bīgun Hachigō), is a grasshopper-themed Gurongi from the Go Group who assumes the form of a young man wearing a scarf. He is also the older brother of Xu·Vazuu·Ba.

One of the few playable Kamen Rider series kaijin in MUGEN.