Marietta as Cathy / Moon Queen

William Mayer as Professor Nichols

Lester Brown as Dr. Jeff Huntley

Pat Reilly as Moon Priestess

Ira Magee as Moon Doll

Lacey Kelly as Moon Doll

Shelby Livingston as Moon Doll

Robert W. Kyorimee as Moon Man

Joyce M. Geary as Moon Doll

Charles Allen as Moon Man

Evelyn Burke as Moon Doll

Joyce Brooks as Moon Doll

Hugh Brooks as Moon Man

Mary Lassey as Moon Doll

R.C. Lassey as Air Force Captain

Robert B. Lassey as Moon Child

Doris Wishman as Lady in Parking Lot (uncredited)