Beet J. Stag

"Stag Buster!"'

Beet J. Stag (ビート・J・スタッグ Bīto Jei Sutaggu?), or simply "J", is the beetle-type Buddy Roid partner of Masato Jin (Beet Buster). He can also become Stag Buster (スタッグバスター Sutaggubasutā?), part of the second set of Go-Busters to join the team.