Leehom Wang as Kong

Stephen Fung as Iron Surfer

Gigi Leung as Erika

Kristy Yang Rongru as Belle

Sammo Hung as Inspector Dark

Yuen Biao as Thunder

Chin Ka-Lok as Jazz

Roy Cheung Yiu-Yeung as Combat

Ekin Cheng Yee-Kin as Young Dark

Cecilia Yip Tung as Aunt Wing

Yu Ka-Ho as Kit

Ron Smoorenburg as Iron Surfer's 1st Opponent

Benjamin Yuen Wai-Ho as Sung

Chan Bo-Yee as

Brian Banowetz as

Brian Ireland as Federal Government Official Being Brief

Jackson Ng Yuk-Sue as Combat 21's Thug

Lee Tat-Chiu as Police Officer at Briefing

Guo Jianyong as Combat 21's Thug / Policeman

Chan Siu-Wah as Combat 21's Thug / Street Rascal

Tang Tai-Wo as Club Fighter

Tony Ling Chi-Wah as Club Fighter

Choi Hin-Cheung as Club Fighter

Tsim Siu-Ling as Club Fighter

Johnny Cheung Wa as Combat 21's Thug

Chan Tat-Kwong as Combat 21's Thug

Chow Gam-Kong as Combat 21's Thug

Yiu Man-Kei as Combat 21's Thug

Wong Kim-Bun as Combat 21's Thug

Hon Ping as Combat 21's Thug

Patrick Ling Chi-Hung as Street Rascal

Choi Chi-Fung as Club Fighter

Sin Yan-Kau as (uncredited)

Chin Yiu-Wing as (uncredited)

Choo Sung-Pong as (uncredited)