Masahiko Umezawa, Wiki Ippo

Masahiko Umezawa (梅沢 正彦, Umezawa Masahiko) is a professional assistant manga artist and Ippo Makunouchi's best friend outside of the Kamogawa gym. After a day of school, Umezawa, along with his friends, Takemura and Matsuda catch up to fellow student, Ippo, and began insulting and beating him underneath a bridge. Trying to provoke a reaction from the submissive high-schooler, they are stopped by a jogging Mamoru Takamura, who scared them away by dodging their punches and stealing the buttons off

Masahiko Umezawa/Manga Gallery, Wiki Ippo

Speed Zone Arc, Wiki Ippo

Wally, Wiki Ippo

Chapter 339, Wiki Ippo

Volume 138, Wiki Ippo

Umezawa Masahiko, Wiki

Volume 136, Wiki Ippo

Umezawa Masahiko, Wiki

Chapter 1, Wiki Ippo

Grim Reaper to the World Arc, Wiki Ippo

Ginpachi Nekota, Wiki Ippo