Louis Koo

Sze-To Bo

Aaron Kwok Fu-Shing

Tony

Cherrie Ying Choi-Yi

Mona

Tony Leung Ka-fai

Lee Kong

Eddie Cheung Siu-Fai

Boss Savage

Jordan Chan Siu-Chun

Mona's Agent

Lo Hoi-Pang

Master Cheng

Calvin Choi Yat-Chi

Jing

Jack Kao

Mona's Father

Hung Wai-Leung

Arcade Player (uncredited)

Lu Ching-Ting

Savage's Runner (uncredited)

Ronald Yan Mau-Keung

Sze-To's Boss

Yuen Bun

Sze-To's Boss (uncredited)

Ho Sai-Man

Fatty

Well Chin Wing-Wai

Club Customer