Kotaro

Kotaro, known as Bossie or Bossy in the dub, is the bull used by Ushinosuke Oshamanbe during his fight in Hell Canyon against Ryoga Hibiki and is easily recognized by the eyepatch over his right eye.

Biography
After agreeing to fight with Ryoga, Ushinosuke took Kotaro with him to Hell Canyon. During the fight, Kotaro was used to drag Ryoga around the Canyon in an attempt to force Ryoga to surrender. This proved fruitless, however, as Ryoga just began running on his hands which gave him a chance to kick Ushinosuke into the Canyon wall whilst Kotaro continued running.