Donnie Yen

Henry Chen Xia / Chan Hak

Joe Chen

Miss Liang

Yu Kang

Kane Luo

Bruce Tong Kwan-Chi

Bruce Guan

Gladys Li

Gladys Wang

Dominic Lam Ka-Wah

Patrick Lin

Woo Fung

Fang Shu Ren

Brahim Achabbakhe

Assistant Boxer Trainer

Alfred Cheung Kin-Ting

Chief Huang

Jess Liaudin

David Jones

Lockhart Ogilvie

Locki MMA Fighter

Felix Lok Ying-Kwan

Guan's Father

Billy Lau Nam-Kwong

Gladys' Father

Lee Fung

Jack's Grandmother

Luo Mingjie

Yun Qianqian

Jenn Zhou

Jai Day

Henry's Step Father

Isabella Chan

German Cheung Man-Kit

Kochun Tse

Jake Huang