An astronaut and crew land on Jupiter's 13th moon and find a monster and women from Atlantis.
| Actor | Role |
|---|---|
 Anthony DexterLuther Blair | Luther Blair |
 Susan ShawHestia | Hestia |
 Paul CarpenterCapt. Larson | Capt. Larson |
| JJacqueline CurtisDuessa | Duessa |
 Harry FowlerSydney Stanhope | Sydney Stanhope |
 Sydney TaflerDr. Higgins | Dr. Higgins |
| RRodney DiakAnderson | Anderson |
| OOwen BerryPrasus | Prasus |
| RRichard WalterThe Creature | The Creature |
| MMaya KoumaniFire Maiden | Fire Maiden |
| NNorma ArnouldFire Maiden | Fire Maiden |
| SSylvia BurrowsFire Maiden | Fire Maiden |
 Kim ParkerFire Maiden | Fire Maiden |
 Jan HoldenFire Maiden | Fire Maiden |