Donnie Yen as Henry Chen Xia / Chan Hak

Joe Chen as Miss Liang

Lok Ming-Kit as Jack Li

Yu Kang as Kane Luo

Bruce Tong Kwan-Chi as Bruce Guan

Chris Kwan-Yiu Tong as Chris Guan

Gladys Li as Gladys Wang

Gordon Chiu-Kin Lau as Gordon Xiang

Dominic Lam Ka-Wah as Patrick Lin

Woo Fung as Fang Shu Ren

Brahim Achabbakhe as Assistant Boxer Trainer

Alfred Cheung Kin-Ting as Chief Huang

Craig Miller as Shower Fighter

Jess Liaudin as David Jones

Lockhart Ogilvie as Locki MMA Fighter

Felix Lok Ying-Kwan as Guan's Father

Benjamin Au-Yeung Wai-Ho as Ben Sir

Billy Lau Nam-Kwong as Gladys' Father

Teresa Lee Fung as Jack's Grandmother

Koo Tin-Lung as Boss Zhang

Mike Leeder as Big Mike MMA Manager

Luo Mingjie as

Yun Qianqian as Jenn Zhou

Jai Day as Henry's Step Father

Tom Caserto as Assistant Boxer Trainer

Isabella Chan as

German Cheung Man-Kit as

Kochun Tse as Jake Huang

Jackie Tai Miu-shan as 6B Student