Two police officers discover an island laboratory where a madwoman is turning martial artists into superkillers.
| Actor | Role |
|---|---|
 Roddy PiperJohn Keller | John Keller |
 Sonny ChibaJiro 'J.J.' Jintani | Jiro 'J.J.' Jintani |
 Meg FosterQuinn | Quinn |
 Tommy Lister Jr.Yanagi | Yanagi |
| DDeron McBeeMuller | Muller |
 Woon Young ParkOsato | Osato |
| LLara SteinickAndy | Andy |
 Roger CudneyStan | Stan |
 Kim Morgan GreeneKaren Keeler | Karen Keeler |
| AArt BarrWaiter | Waiter |
| GGeorge BelangerCaptain Edwards | Captain Edwards |
| MManuel BenítezGuard #1 | Guard #1 |
| RRufino EchegoyenBellboy | Bellboy |
| JJosé EscandónHotel Clerk | Hotel Clerk |
| HHiroyasu FujishimaHiro | Hiro |
 Mario Iván MartínezDr. Edward Collier | Dr. Edward Collier |
| MMineko MoriJill | Jill |
 Michael SabatinoRudy | Rudy |
| CCraig MallyDavis (uncredited) | Davis (uncredited) |
| PPamela RothAndy's Mother (uncredited) | Andy's Mother (uncredited) |