Joe Wiki
Kanichi Nishiyama


Mammoth Nishi




10 (10 KOs)


3 (1 KO)



Nishi is Joe's best friend, sparring partner and later Joe's trainer. He is also Noriko Hayashi's husband and an employee of the Hayashi grocery store.


Nishi's personality changes drastically from an arrogant juvenile delinquent to calm worker at a grocery store. He takes a liking to boxing after watching Joe's match against Rikishi in the detention center.


He is a juvenile delinquent. He first meets Joe in a juvenile jail, where they fight each other and Joe defeats him. Nishi later reveals a more cowardly side when he meets Joe at the correction house, where they become friends.
When Joe comes back to Namida Bridge he is surprised to find Nishi at the Tangei boxing gym. Nishi joins the gym to learn boxing alongside Joe. He was the only useful sparring partner Joe had in the entire story. Nishi has a crush on Noriko Hayashi, who is the daughter of his boss at the grocery store.
Nishi injures his fist in a match and decides to retire from boxing. In his retirement party he confesses that he will always be proud of dedicating his youth to boxing, challenging Joe to one last match.
Later, Nishi marries Noriko and becomes more dedicated to his work at the store, though he continues to help Joe with his training and works in the corner during his matches, alongside Danpei.