Simon Yam

Capt. Wong Man Chin / Dog Head

Tony Leung Ka-Fai

Chan Chong-shan / Hollow Man

Kate Tsui Tsz-Shan

Peggy / Piggy / Constable Ho Ka Po

Maggie Siu Mei-Kei

Madam Fong

Lam Suet

Ng Tung / Fatman

Eddie Cheung

Snr Insp. Chan

Jimmy Wong

Wo / IB cop

Lo Chung-Him

Snakie / SU agent

Berg Ng Ting-Yip

Shan's Gang Member

Wayne Lai Yiu-Cheung

Shan's Gang Member

Samuel Pang King-Chi

Shan's Gang Member

Frank Liu Zong-Ji

Shan's Gang Member

Chiu Chi-Shing

Shan's Gang Member

Lau Kwok-Shing

Master

Susan Tse Suet-Sum

Master's Wife

Tam Kon-Chung

IB Policeman (uncredited)

Hung Wai-Leung

Kidnapper

Au Hin-Wai

Cheung Wing-Cheung

Loan Shark (uncredited)