Arthur Franz
Dr. Jim Barker
Acting
Virginia Huston
Carol Stafford
Acting
Cameron Mitchell
Steve Abbott
Acting
John Litel
Dr. Lane
Acting
Richard Gaines
Prof. Jackson
Acting
Morris Ankrum
Ikron
Acting
Marguerite Chapman
Alita
Acting
Lucille Barkley
Terris
Acting
Robert Barrat
Tillamar
Acting
Edward Earle
Justin (uncredited)
Acting
William Forrest
General (uncredited)
Acting
David Bond
Ramay (uncredited)
Acting
Stanley Blystone
Councilman (uncredited)
Acting
Tris Coffin
Commentator (uncredited)
Acting
Everett Glass
Montar (uncredited)
Acting
Trevor Bardette
Alzar (uncredited)
Acting