Lou Ferrigno as Billy

Reb Brown as Scott

Shannon Lee as Mi Lo

James Shigeta as Tin Lum Yin

Gerald Okamura as Dr. Wo

James Lew as Chin

Deron McBee as Spike Duval

Craig Ng as Billy Woo

Steven Ito as Mr. Chow

Leo Fong as Tanaka

Barbara Dow as Elegant Lady

Frankie Avina as Black Hand Leader

Mike Jacobs Jr. as Ambulance Driver

Tadashi Yamashita as Wang

Michael Bailey Smith as Sampo Fighter (uncredited)

Dennis Reese as Fighter #1

Angel Santana as Cage Attendant