Happa Banki (17): A dynamite Savage Earth Barbaric Machine Beast, Yogostein's "number one hooligan" and ends his sentences with "dappa." He is sent to destroy the city with his Dynamite Don-Don attack until the Go-on Wings interfere. Teaming up with Yogostein and Earth Pollution Vice-Minister Hiramechimedes as part of a trio, Happa Banki overwhelms the Go-ongers until the Go-on Wings arrive. He is scrapped by Go-onGold after he takes his Bikkurium, preventing him from growing, and instead making him explode. His name comes from the Japanese word for "rock blasting" (発破, happa).
- Height: 221 cm
- Weight: 248 kg