Louis Koo
Sze-To Bo
Aaron Kwok
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
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
Li Haitao
Club Saxophonist
Jimmy Wong
Taxi Driver (uncredited)
Lee Long-Ming
Gambler
Wing Chung
Judoist
Kary Ma Ho-Yee
Judoist
Kelly Lau Miu-Kei
Judoist
Kwok Yue-Kin
Judoist
Tsang Tak-Ming
Judoist
Robin Wan Kam-Fai
Judoist
Joe Lee Nim-Cho
Judoist
Tai Bo
Judoist
Tsui Ka-Ho
Judoist
Kwok Pak-Yin
Judoist
Yeung Fan
Judoist
Cheung Wai-Kit
Judoist
Crew
Johnnie To
Director
Yau Nai-Hoi
Writer
Yip Tin-Shing
Writer
Au Kin-Yee
Writer
Peter Kam Pau-Tat
Original Music Composer
Cheng Siu-Keung
Director of Photography
David M. Richardson
Editor
Tony Yu
Art Direction
Stanley Cheung Sai-Kit
Costume Design
Chiu Chi-Shing
Unit Manager
Simon Fung
Assistant Editor
Lam Wai-Lun
ADR Recordist
Lam Wai-Lun
Boom Operator
Johnnie To
Producer
Stephen Lam Bing-Kwan
Producer
Pad Chan Wai-Hung
First Assistant Director
Ho Chi-Hang
First Assistant Director
Ng Kwok-Fai
Boom Operator
Charles Heung
Producer
Law Wing-Cheong
Assistant Director