Stephen Chow as Chow Sing Sing

Ng Man-Tat as Tso Tat Wah

Sharla Cheung as Miss Ho

Roy Cheung Yiu-Yeung as Teddy Big

Barry Wong Ping-Yiu as Scissor Legs

Karel Wong Chi-Yeung as Detective Wong

Gabriel Wong Yat-Shan as Turtle Wong

Paul Chun Pui as Mr. Lam Cho-Tung

Kingdom Yuen King-Tan as Ms. Leung

Dennis Chan Kwok-San as Mr. Cheng

Chang Gan-Wing as Chemistry Teacher

Eleven Leung Sap-Yat as Johnny

Tse Wai-Kit as Siu Yiu

Peter Lai Bei-Dak as Officer Wong

Pang Chi-Ching as Annie

Ridley Tsui Bo-Wah as

Johnny Cheung Wa as

Mak Wai-Cheung as

Danny Chow Yun-Kin as

陳文好 as 黃小龜之祖母

Teddy Chan Tak-Sum as

Wan Seung-Lam as

Paul Wong Kwan as

Christopher Chan Sai-Tang as

Lee Chuen-Hau as

Douglas Kung Cheung-Tak as

Tsim Siu-Ling as

聶鵬峰 as

Huang Kaisen as

Andrew Wu Ying-Kin as

Chung Ning Wong as

Peter Kwok Bei-Dak as