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

Teresa 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

Isabella Chan

German Cheung Man-Kit

Kochun Tse

Jake Huang

Jackie Tai Miu-shan

6B Student