Andy Lau

Chief Sergeant Major Lee Rock

Sharla Cheung

Grace / Hsiun

Aaron Kwok

Bill Lee Chun-Hsien

Chingmy Yau

Rose / Ha

Ng Man-tat

Lardo / Lio

Paul Chun

Sergeant Ngan Tung

Michael Chan

King Crab (uncredited)

Victor Hon Kwan

Hau (uncredited)

Louis Roth

Commissioner Alan (uncredited)

Wong Chi-Keung

Detective Yang

Peter Chan Lung

Kirin / Fire Dragon

Jameson Lam Wa-Fan

Rock's detective at station (uncredited)

Cheung Tat-Ming

Ng Hak Ping (uncredited)

Charles Heung

Lam Kong / Sergeant Lam Kung (uncredited)

Xinxin Xiong

Shrimp Head / Lu (uncredited)

James Tien Chuen

Silverfish

John Wakefield

Translator for Comm. Alan (uncredited)

Dave Lam Ching

Detective Tak (uncredited)