Andy Lau

as Lee Rock

Sharla Cheung

as Grace Pak

Chingmy Yau Suk-Ching

as Rose

Richard Ng Man-Tat

as Piggy

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 Master 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 Ma

Louis Roth

as Commissioner Alan

Chun Wong

as Big Brother Ma

Garry Chan Chi-Shing

Ricky Wong Chun-Tong

William Ho

as Gambling den boss at Rock's meeting

Ridley Tsui Bo-Wah

as Rascal at Nightclub

Paco Yick Tin-Hung

Adam Chan Chung-Tai

Lam Kai-Wing

Bill Lung Biu

Leung Gam-San

Ken Yip Wing-Kin

Dave Lam Ching