"Guy is a Japanese street-brawler in New York who chooses to train under the famed boxer, Roman, with the hopes that he can raise enough money as a heavyweight to fund a life-saving operation for his father."
Yasunori Matsumoto
as Guy Hyuga (voice)
Gorō Naya
as Alex Gordon (voice)
Masaru Ikeda
as Ryu Hyuga (voice)
Hiromi Tsuru
as Lily (voice)
Tessyo Genda
as Don Bailey (voice)
Yusaku Yara
as Lucky Roman (voice)
Akiko Yajima
as Mary Bailey (voice)
Hideyuki Umezu
as Clerk (voice)
Ikuya Sawaki
as Referee (voice)
Kenichi Ono
as Jack Redman (voice)
Kozo Shioya
as Billy (voice)
Masashi Hirose
as Trainer (voice)
Miki Narahashi
as Ronnie (voice)
Minami Takayama
Run Sasaki
as Yonkers Girl (voice)
Shin Aomori
as King Kong (voice)
Shinya Ôtaki
as Zolder (voice)
Toshihiko Kojima
as Commissioner Gaston (voice)
Goro Omi
Music
Noboru Ishiguro
Director
Etsuji Yamada
Sound Director
Shuuichi Ozeki
Producer
Masao Nakada
Character Designer
Sachiko Miki
Editor
Isao Kokata
Storyboard
Shouji Imai
Screenplay
Hideo Chiba
Art Direction
Mitsuo Sejima
Executive Producer
Animation Director