Main character of Taiyou no Makibaoo and nephew of previous protagonist Midori Makibaoo. Also known as Bunta (his birth name).
Is a horse. Like Midori Makibaoo, Bunta resembles a small white mule with large nostrils, though he has a prominent cowlick in front and does not (usually) have dripping nostrils.
Bunta is based on the real-life racehorse Haru Urara. Or rather, the life story of Haru Urara, as Bunta himself does not resemble Haru Urara in appearance and is male instead of female.