The Tubaloid (チューバロイド, Chūbaroido) (O-10) is a Metaloid that Enter created with the "roar" Metavirus to confront the Go-Busters in one of Enter's plans, by marking the Go-Busters with his apparently weak sound wave as phase one, and managed to hit the male Busters. The Tubaloid usually attacks with a burst of sound from the horn on his left shoulder, as well as missiles from the tubes that function as his right fingers.