Louis Koo

Sze-To Bo

Aaron Kwok

Tony

Cherrie Ying Choi-Yi

Mona

Tony Leung Ka-fai

Lee Kong

Jordan Chan

Mona's Agent

Eddie Cheung

Boss Savage

Calvin Choi Yat-Chi

Jing

Jack Kao

Mona's Father

Lo Hoi-pang

Master Cheng

Hung Wai-Leung

Arcade Player with Savage

Lu Ching-Ting

Savage's Runner

Ronald Yan Mau-Keung

Sze-To's Boss

Ho Sai-Man

Club Doorman

Well Chin Wing-Wai

Club Customer

Li Haitao

Club Saxophonist

Cheung Wai-Kit

Judoist

Yeung Fan

Judoist

Kwok Pak-Yin

Judoist

Tsui Ka-Ho

Judoist

Tai Bo

Judoist

Joe Lee Nim-Cho

Judoist

Robin Wan Kam-Fai

Judoist

Tsang Tak-Ming

Judoist

Kwok Yue-Kin

Judoist

Kelly Lau Miu-Kei

Judoist

Kary Ma Ho-Yee

Judoist

Wing Chung

Judoist

Lee Long-Ming

Gambler

Jimmy Wong Wa-Wo

Taxi Driver (uncredited)

Yuen Bun

Sze-To's Boss (uncredited)