Lee Rock

Andy Lau Tak-Wah

as Lee Rock

Sharla Cheung Man

as Grace

Chingmy Yau Suk-Ching

as Rose

Richard Ng Man-Tat

as Lardo

Paul Chun Pui

as Sergeant Ngan Tung

Kwan Hoi-San

as Sergeant Chan

Michael Chan Wai-Man

as King Crab

Tam Sin-Hung

as Mrs Chan

James Tien Chun

as Silverfish

Lung Fong

as Snake

Victor Hon Kwan

as Hau

Lee Siu-Kay

as Drill Officer

Eddy Ko Hung

as Police Instructor

Wong Yat-Fei

as Rose's father

Jamie Luk Kim-Ming

as Little Brother M

Louis Roth

as Commissioner Alan

Chun Wong

as Big Brother Ma

Garry Chan Chi-Shing

Ricky Wong Chun-Tong

William Ho

Ridley Tsui Bo-Wah

Paco Yick Tin-Hung

Adam Chan Chung-Tai

Lam Kai-Wing

Bill Lung Biu

Leung Gam-San

Ken Yip Wing-Kin