Jack Palance
Omus
Acting
Carol Lynley
Nikki
Acting
Barry Morse
Dr. John Caball
Acting
John Ireland
Senator Smedley
Acting
Nicholas Campbell
Jason Caball
Acting
Anne-Marie Martin
Kim Smedley
Acting
Greg Swanson
Sparks (voice)
Acting
Mark Parr
Sparks
Acting
William Hutt
Lomax (voice)
Acting
Ardon Bess
Merrick
Acting
Lynda Mason Green
Lunar technician
Acting
Albert Humphries
Robot technician
Acting
Bill Lake
Spacesuited man
Acting