Kinken

is a kangaroo boxing champion and is Urusai's personal summon. He is sometimes referred as.

Background
At some point when Urusai learned how to use the Summoning Technique, Kinken was one of the first to accept kangaroos do the contract with him. Kinken always been supremely confident of himself and always believed he could solve all his problems, which certainly attracted the interest of Urusai for him. One of his favorite hobbies is to display his golden boxing gloves or his golden belt. Even often being displayed and arrogant, Urusai and Kinken are good friends.

During the Third Shinobi World War, Kinken was one of kangaroos that Urusai summoned in his fight against.

Personality
Kinke is extremely confident and nothing can shake his emotional. Often he is discriminated for being grumpy and for like to relive the past, but such features, he said, are brands that were left on his body during the war years, brands much deeper than his scars. The only person (or kangaroo) who has the courage to face Kinken is Urusai, and maybe that's why Kinken is so loyal to him.

Appearance
Kinken is high as any kangaroo and likes to balance on his tail. One of his pointy ears had few pieces ripped and there are scars around his eyes. He has a gray beard that he cares very proud. He is always using his golden boxing gloves and his belt that he won after winning some very important boxing tournament among the kangurus. In the golden belt is the kanji of champion..