Synopsis for “The Menace of Metallo”
John Corben is an unscrupulous reporter that works in the Metropolis area. Aside from his mustache, Corben is practically the spitting image of Superman. While driving his car, Corben gets into a terrible accident and is nearly killed. His broken body is taken to the laboratory of Professor Vale who replaces Corben’s failing limbs with a super-strong metallic alloy. He replaces his heart with a surrogate pump made of Uranium and covers the endoskeleton with a foam-latex sheathe resembling human skin. The operation is a success, but soon after, Professor Vale suffers from a mild stroke.
Dubbed Metallo, Corben begins his new life – a life of crime. Metallo’s Uranium heart will only last for one day before it needs to be replaced, so Metallo begins breaking into various facilities to steal more Uranium. Whenever he feels his Uranium stores running low, Metallo becomes weak and dizzy.
Corben gets a job at the Daily Planet and begins courting Lois Lane. Lois is enamored with Corben due to his physical resemblance to Superman – a fact that invariably irritates Clark Kent.
Professor Vale meanwhile, discovers that Kryptonite can work just as effectively at powering Metallo as Uranium, but with the added benefit that it will no longer need to be recharged. Metallo steals a Kryptonite rock from a local exhibition hall and has Vale implant it into his chest. Metallo learns that Kryptonite can also destroy Superman. Certain that Superman will likely try to arrest him for his recent crimes, Metallo decides to use the power of his Kryptonite heart to strike the first blow against the Man of Steel.
He baits a trap for Superman, but Superman manages to avoid exposure to Kryptonite and pursues Metallo. He chases him back to Lois Lane’s apartment when suddenly Metallo begins to feel weak. What neither Vale nor Metallo realize was that the Kryptonite that had been used to power his heart was actually fake. It was nothing more than an ordinary rock painted green to resemble Kryptonite. Unable to recharge himself, Metallo falls over dead from a heart attack.