John Agar
Dr. Curt Taylor (archive footage)
Acting
Ethan Allen
(archive footage)
Acting
John Ashley
Stan Kenyon (archive footage)
Acting
Susan Bjurman
Anne Taylor (archive footage)
Acting
Bob Cowan
Cpl. Culver (archive footage)
Acting
Warren Hammack
Lt. Robertson (archive footage)
Acting
Cynthia Hull
Susan Rogers (archive footage)
Acting
Tony Huston
Culver's Sergeant (archive footage)
Writing
Bill Peck
(archive footage)
Acting
Jordan Lopez
Rakor space gorilla (uncredited)
Production