The entertainment duo Mitchell & Petrillo, en route to a USO show for troops in Guam, fall out of their plane and end up on the jungle island of Cola Cola, where the mad scientist Dr. Zabor is conducting evolutionary experiments.
| Actor | Role |
|---|---|
 Bela LugosiDr. Zabor | Dr. Zabor |
 Duke MitchellHimself | Himself |
 Sammy PetrilloHimself | Himself |
 CharlitaNona | Nona |
 Muriel LandersSaloma | Saloma |
 Al KikumeChief Rakos | Chief Rakos |
 Mickey SimpsonChula | Chula |
| MMilton NewbergerBongo the Witch Doctor | Bongo the Witch Doctor |
 Martín GarralagaPepe Bordo / Waiter | Pepe Bordo / Waiter |
| SSteve CalvertGorilla | Gorilla |
 Ray CorriganGorilla | Gorilla |
 Billy WilkersonNative Warrior | Native Warrior |