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