Ronguhōn

is Taikutsuna's personal summon.

Personality
Ronguhōn is a huge ox ninja, holder of a golden Twin Bladed Axe. Even though it is large, muscular and worshiper of a fight, he isn't arrogant or threatening. On the contrary, most of the time is childish and friendly. But his temper completely changes if someone insult his beloved, the cow also summoned by Taikutsuna, Shiro, or during a battle.

Quotes

 * (To Taikutsuna)"Master, how do you want me to crush these guys? I'm friendly and I can send them straight to a hospital?"
 * (To Shiro) "We are a perfect pair! Why not want anything with me? I think you're beautiful, soft and moody. You are the ideal cow for me."