 Bruce LeeBilly Lo | Billy Lo |
 Gig YoungJim Marshall | Jim Marshall |
 Dean JaggerDr. Land | Dr. Land |
 Hugh O'BrianSteiner | Steiner |
 Colleen CampAnn Morris | Ann Morris |
 Robert WallCarl Miller | Carl Miller |
 Mel NovakStick | Stick |
 Kareem Abdul-JabbarHakim | Hakim |
 Chuck NorrisColt | Colt |
 Dan InosantoPasqual | Pasqual |
| BBilly McGillJohn | John |
 Sammo Kam-Bo HungLo Chen | Lo Chen |
 Roy ChiaoHenry Lo | Henry Lo |
 Kim Tae-JeongBilly Lo | Billy Lo |
 James Tien ChunCharlie Wang | Charlie Wang |
 Yuen BiaoBilly Lo | Billy Lo |
 Jim JamesSurgeon | Surgeon |
 Austin Wai Tin-ChiLo Chen's Cornerman (uncredited) | Lo Chen's Cornerman (uncredited) |
 Casanova WongLau Yea-chun (archive footage) | Lau Yea-chun (archive footage) |
 Stephen ChangMing Tao (uncredited) | Ming Tao (uncredited) |
| WWarwick Paul EvansRingside Commentator (uncredited) | Ringside Commentator (uncredited) |
 Lam Ching-YingMacau Fighter (uncredited) | Macau Fighter (uncredited) |
 MarsMacau Fighter (uncredited) | Macau Fighter (uncredited) |
 Robert ClouseCarl's Second #1 (uncredited) | Carl's Second #1 (uncredited) |
 Yuen WahLo Chen's Cornerman (uncredited) | Lo Chen's Cornerman (uncredited) |
 Nora Miao(archive footage) (uncredited) | (archive footage) (uncredited) |
 Lau Kar-Wing(uncredited) | (uncredited) |
 Paul Chung Fat(uncredited) | (uncredited) |
 Betty Ting Pei(uncredited) | (uncredited) |
 Andre Morgan(uncredited) | (uncredited) |
