•
Sammo Hung as Eric Ng (伍家廉), nicknamed Kidstuff (鷓鴣菜), a former thief and the leader of the Lucky Stars. •
Andy Lau as Lambo (藍保), an elite cop with outstanding martial arts skills and agility who longs to become a
special forces officer. He is tricked into joining the mission when Inspector Wong sets him up to seem like he murdered his own colleague on his test for the
special force. •
Alan Tam as Top Dog (狗王伦), a police constable who can speak to dogs. •
Kent Cheng as Fat Cat (肥豹), a lazy and corrupt sergeant who abuses his power. •
Anthony Chan as Long Legs (高佬), a timid beat cop who flees when crime appears in front of him •
Billy Lau as Libbogen / Lib-Bogen (力保健), Long Leg's equally timid partner. • Maria Tung as Yum Yum (一品香), a beautiful police inspector who is recruited to train the new Lucky Stars in combat and disguise. •
Karl Maka as Albert Au (區瑞強 ), nicknamed Baldy (光頭佬), a bumbling chief inspector and Quito's husband who is jealous of Kidstuff. •
Sylvia Chang as Quito (蚊滋), a tough police inspector who is Albert's wife and Kidstuff's childhood friend and first love. • Tetsuya Matsui as Yukio Fushime (哲木幸男), a Yakuza leader. •
Alfred Cheung as Fushime's translator. •
Cho Tat-wah as Walter Tso (曹達華), superintendent of the Criminal Investigation Department (CID) who recruits Kidstuff to steal the diamonds from Fushime. •
Stanley Fung as Rawhide (犀牛皮), an original Lucky Stars member who has become a bank robber. •
Richard Ng as Sandy an original Lucky Stars member who has become a bank robber. •
Eric Tsang as Roundhead (羅漢果), an original Lucky Stars member who has become a bank robber. •
Michael Miu as Pagoda (花塔餅), an original Lucky Stars member who has become a bank robber. • Wong Ching as Inspector Wong (王幫辦), a police officer who assists Kidstuff in recruiting the new Lucky Stars. •
Teresa Ha as Sister Ping (萍姐), Yum Yum's housekeeper who Fat Cat makes love with thinking she was Yum Yum in disguise. • Joao Antonio Gomes as Doyuta, Fushime's top henchman. •
James Tien as Lambo's commanding officer. •
Anders Nelsson as Officer Raygun (列根), Tso's subordinate who asks his boss for permission to but food at
7-Eleven when he gets hungry during a meeting. •
Wong Jing as Tiny who hits his cheating wife under the advice of Baldy. • Pauline Wong as Tiny's wife who cheated on him. •
Norman Chui as Sum Sing-yee (沈勝衣), an undercover cop killed by Fushime. • Ken Boyle as Kissing Fish (接吻魚), an arms dealer who colludes with Fushime. •
Bolo Yeung as a cinema patron who threatens Top Dog when the latter was laughing while an emotional scene from
Heart of Dragon was playing. • Chiang Cheng as a cinema patron who threatens Top Dog. • Steve Mak as a cinema patron who threatens Top Dog. •
Fung Hark-On as Fushime's henchman. •
Lau Kar-wing as Tso's subordinate who suggests to steal the diamonds. •
Barry Wong as a police officer. • Luk Ying-hong as a police officer. •
Fung Ging Man as a police officer. • Billy Ching as a police detective. • Lee Chi-kit as Fushime's bodyguard. • Steven Hoh as a cop in a restaurant who is part of an act to trick Fat Cat in joining the mission. • King Lee as Fushime's bodyguard. • Yuen Miu as Fushime's thug. • Chu Tau as Fushime's thug. • Chow Kam-kong •
Hsiao Hou as a policeman. • Danny Poon • Wong Ying-kit as a policeman at the police station cafeteria. • Lau Leung-fat as a fast food restaurant manager. • Lo Kin as a rascal at fast food restaurant. ==See also==