Louis Koo as Sze-To Bo

Aaron Kwok as Tony

Cherrie Ying Choi-Yi as Mona

Tony Leung Ka-fai as Lee Kong

Eddie Cheung Siu-Fai as Boss Savage

Jordan Chan Siu-Chun as Mona's Agent

Lo Hoi-Pang as Master Cheng

Calvin Choi Yat-Chi as Jing

Jack Kao as Mona's Father

Hung Wai-Leung as Arcade Player (uncredited)

Lu Ching-Ting as Savage's Runner

Ronald Yan Mau-Keung as Sze-To's Boss

Yuen Bun as Sze-To's Boss (uncredited)

Ho Sai-Man as Fatty

Well Chin Wing-Wai as Club Customer

Li Haitao as Club Saxophonist

Jimmy Wong as Taxi Driver (uncredited)

Lee Long-Ming as Gambler

Wing Chung as Judoist

Kary Ma Ho-Yee as Judoist

Kelly Lau Miu-Kei as Judoist

Kwok Yue-Kin as Judoist

Tsang Tak-Ming as Judoist

Robin Wan Kam-Fai as Judoist

Joe Lee Nim-Cho as Judoist

Tai Bo as Judoist

Tsui Ka-Ho as Judoist

Kwok Pak-Yin as Judoist

Yeung Fan as Judoist

Cheung Wai-Kit as Judoist