The Dumbbellloid (ダンベルロイド, Danberuroido) is a Metaloid that Enter created with the "work out" Metavirus to draw attention to tire out the Go-Busters. This Metaloid flings heavy dumbbells at people that latches to their hands and makes them follow his commands. Since he is made from exercise equipment, he's a rather boisterous being that wants people to work out, or otherwise be killed for not keeping up. Dumbbellloid praised Blue Buster, for his fight brought him victory.