 Simon YamSergeant Wong Man-Chin / Dog Head | Sergeant Wong Man-Chin / Dog Head |
 Tony Leung Ka-faiChan Chong-Shan / Hollow Man | Chan Chong-Shan / Hollow Man |
 Kate Tsui Tsz-ShanConstable Ho Ka-Po / Piggy | Constable Ho Ka-Po / Piggy |
 Lam SuetNg Tung / Fatman | Ng Tung / Fatman |
 Maggie Shiu Mei-KeiMadam Fong | Madam Fong |
 Eddie Cheung Siu-FaiChief Inspector Chan | Chief Inspector Chan |
 Berg Ng Ting-YipChan Chong-Shan's Gang Member | Chan Chong-Shan's Gang Member |
 Wayne Lai Yiu-CheungChan Chong-Shan's Gang Member | Chan Chong-Shan's Gang Member |
 Samuel Pang King-ChiChan Chong-Shan's Gang Member | Chan Chong-Shan's Gang Member |
 Susan Tse Suet-SumMaster's Wife | Master's Wife |
 Lau Kwok-ShingMaster | Master |
 Wong Siu-FoonIB Policeman | IB Policeman |
 Au Hin-WaiSenior Police Officer | Senior Police Officer |
 Lo Chung-HimSnakie | Snakie |
 Frank Liu Zong-JiChan Chong-Shan's Gang Member | Chan Chong-Shan's Gang Member |
| CChan KungChan Chong-Shan's Gang Member | Chan Chong-Shan's Gang Member |
 Jimmy WongOfficer Wo | Officer Wo |
 Chiu Chi-ShingChan Chong-Shan's Gang Member | Chan Chong-Shan's Gang Member |
 Hung Wai-LeungKidnapper | Kidnapper |
| PPauline Yeung Yung-LinCleaning Lady (uncredited) | Cleaning Lady (uncredited) |
 Tam Kon-ChungIB Policeman (uncredited) | IB Policeman (uncredited) |
| AApple Chow Suk-WaiJewelry Store Clerk (uncredited) | Jewelry Store Clerk (uncredited) |
 Cheung Wing-CheungLoan Shark (uncredited) | Loan Shark (uncredited) |
| JJohnny Wong Yin-MingMan Eating in 7-Eleven (uncredited) | Man Eating in 7-Eleven (uncredited) |
 Sherwin Ming Tak-FungSergeant Wong's Subordinate (uncredited) | Sergeant Wong's Subordinate (uncredited) |
 Lee Long-MingSurveillance Unit Operator (uncredited) | Surveillance Unit Operator (uncredited) |
