- Akira Kobayashi
- Yuuji Komatsu, Oonogi Clan senior member
- Ryôji Hayama
- Kazuo Itakura, Itakura Clan boss
- Tadao Nakamaru
- Seiichi Yatô, Oonogi Clan second-in-command
- Hiroshi Nawa
- Masakichi 'Masa' Jinno, Kansai Syndicate vice-chair
- Tatsuya Fuji
- Shigeo Minato, Oonogi Clan member
- Yuriko Hime
- Michiyo Okano, Club Buckingham owner
- Jirô Okazaki
- Sabu, Oonogi Clan member
- Yoshi Katô
- Kôjirô Oonogi, Oonogi Clan boss
- Fujio Suga
- Mannosuke Jinno, Kansai Syndicate chair
- Bontarô Miake
- Shinsaku Fujioka, Sakura Syndicate chair
- Shinji Takano
- Mishima, Marubishi Trading director
- Kichijirô Ueda
- Terashima, the loan shark
- Takamaru Sasaki
- Godô Yamanouchi, the mediator
- Michio Hino
- Hirai, Hirai Trading director
- Kyôko Mine
- Kazue, Sabu's sister
- Junichi Yamanobe
- (as Jun'ichi Yamanobe)
