Uses stock footage of the underground magneto-dynamo from the German science fiction thriller Gold (1934).
The M.A.N.I.A.C. machine that is fed the cards is actually an old card sorting machine.
Richard Carlson's character works for the OSI, the Office of Scientific Investigation. Twenty-One years later, Colonel Steve Austin, the Six Million Dollar man works for the same agency.
Although credited to Curt Siodmak, most of the film was actually directed by Herbert L. Strock, who was hired by Ivan Tors for his skills as an editor, which were viewed as essential for a film that relied so much on stock footage.
The jet fighter shown as transporting the "magnetic monster" was a Lockheed "Shooting Star" T-33 two-seat pilot training aircraft.