On screen
Cast
14 credited performers
John Carradine
Cosmic Man
Bruce Bennett
Dr. Karl Sorenson
Angela Greene
Kathy Grant
Paul Langton
Col. Matthews
Scotty Morrow
Ken Grant
Artwork unavailable
Lyn Osborn
Sgt. Gray
Artwork unavailable
Walter Maslow
Dr. "Rich" Richie
Herbert Lytton
Gen. Knowland
Ken Clayton
Master Sergeant
Artwork unavailable
Harry Fleer
Bill, the Park Ranger
John Erman
Radar Operator
Artwork unavailable
Dwight Brooks
Major
Artwork unavailable
Hal Torey
Dr. Steinholtz
Artwork unavailable
Alan Wells
Sergeant