 | Julian Rome |
 | Dr. Kate Brecher |
 | Dr. Michael Straub |
Dr. Alexi Gierach | |
 | Nyla Olson |
 | Shelly Klein |
 | Abell (as Stu Charno) |
 | Grisham |
Dacia | |
 | Pilot |
Co-Pilot (as Kaloyan Vodenicharov) | |
Airman | |
Navigator | |
 | Dr. John Bachman |
 | Sam |
First Man | |
Second Man (as William Skinner) | |
Third Man (as Franklin Vallette) | |
Fourth Man | |
Falkland Man #1 (as Ross Clarkson) | |
Falkland Man #2 | |
Kitt Peak Man #1 (as Tyron Pinkam) | |
 | Kitt Peak Man #2 |
 | Copeland |
 | Secretary Bayer |
Gordon Osler | |
Reporter (as Mariana Stanisheva) | |
Kapitan Sokolov | |
Xo Volkov | |
 | Navigator Petrenko |
Army General (as Harry Anneachkin) | |
Alien |