Louis Koo

Sze-To Bo

Aaron Kwok Fu-shing

Tony

Cherrie Ying Choi-yi

Mona

Tony Leung Ka-fai

Lee Kong

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