 | Florence Marly als Alien Queen |
 | Basil Rathbone als Dr. Farraday |
 | John Saxon als Allan Brenner |
 | Judi Meredith als Laura James |
 | Dennis Hopper als Paul Grant |
 | Robert Boon als Anders Brockman |
| Don Eitner als Tony Barrata |
 | Virgil Frye als Control Panel |
 | Forrest J. Ackerman als Farraday's Aide |
| Gary Crutcher als Spaceship Crew Member |
| Curtis Harrington | Director |
| Ronald Stein | Music Editor |
| George Edwards | Producer |
| Curtis Harrington | Writer |
| Stephanie Rothman | Producer |
| Samuel Z. Arkoff | Producer |
| Roger Corman | Executive Producer |
| Mikhail Karyukov | Story |
| Vilis Lapenieks | Director of Photography |
| Leo H. Shreve | Editor |
| Al Locatelli | Art Direction |
| Leon Smith | Set Decoration |
| T. Glinkova | Costume Design |
| William Condos | Makeup Artist |
| George Spier | Hairstylist |
| Harold Garver | Sound |
| Gene Corso | Sound Effects |
| James Nelson | Sound Effects |
| Otar Koberidze | Story |
