Donnie Yen

Henry Chen Xia / Chan Hak

Joe Chen

Miss Liang

Lok Ming-Kit

Jack Li

Yu Kang

Kane Luo

Bruce Tong Kwan-Chi

Bruce Guan

Chris Kwan-Yiu Tong

Chris Guan

Gladys Li

Gladys Wang

Gordon Chiu-Kin Lau

Gordon Xiang

Dominic Lam Ka-Wah

Patrick Lin

Woo Fung

Fang Shu Ren

Brahim Achabbakhe

Assistant Boxer Trainer

Alfred Cheung Kin-Ting

Chief Huang

Craig Miller

Shower Fighter

Jess Liaudin

David Jones

Lockhart Ogilvie

Locki MMA Fighter

Felix Lok Ying-Kwan

Guan's Father

Benjamin Au-Yeung Wai-Ho

Ben Sir

Billy Lau Nam-Kwong

Gladys' Father

Lee Fung

Jack's Grandmother

Koo Tin-Lung

Boss Zhang

Mike Leeder

Big Mike MMA Manager

Luo Mingjie

Yun Qianqian

Jenn Zhou

Jai Day

Henry's Step Father

Tom Caserto

Assistant Boxer Trainer

Kang Yu

Kane Luo

Isabella Chan

German Cheung Man-Kit

Kochun Tse

Jake Huang