As I did research for this post, I found out that there was actually a Superman villain called “Metalo” (with one “l”) back in the 40’s. However, he’s unrelated to the better known one (he was just a guy in a power armor) and thus I’m not covering him here, other than mention that possibly the later one was named after him (name trademarks are SERIOUS business in comics. Ask the four completely different Captain Marvels.)
Anyway, the first true Metallo first appeared in 1959. He was John Corben, a (crooked) journalist who had just committed a murder when he had a car accident. He was rescued by a kindly scientist named Prof. Vale who, wouldn’t you know it, was an expert in robotics, so he saved his life by transforming him into a cyborg.
The robotic body required uranium “pills” to work; however, it spent them in just a day (!); the only permanent alternative, as you might guess, was kryptonite. The scientist who created him then dies of a heart attack, scared by an avalanche! (Hey, as far as Silver Age stories go, this is a perfectly valid set of coincidences, OK?)
Corben then decides to get some kryptonite. He joins the Daily Planet, and even hit on Lois Lane! (The fact he looked like Superman with a mustache probably helped.) He obtains some kryptonite but then decided to use it for a trap to kill Superman, instead of powering his body, since he had heard there was more at a local museum. Except the one in the museum turned out to be a FAKE, and he died when his body ran out of power. OK, even by Silver Age standards, THAT was dumb.
It wasn’t until the 1970’s that a new Metallo was introduced. This one was Roger Corben, brother of John. He wanted revenge for his brother’s death (never mind it was his own stupid fault) and a villainous organization (it may have been SKULL, they were very active in the Superman comics of the time, but I don’t know for sure) gave him the chance by transforming him into a new Metallo, transplanting his head into a robot body with a kryptonite power source.
(Note: he’s wearing a lead-lined mask.)
This Metallo was superstrong, and had buttons on his wrist that allowed him to open his chest plate to expose Superman to the K-radiation. Still, the fact his whole head was still human made it easy to knock him out with a well-placed batarang or similar things. Talk about design flaws. Still, he was active as a villain for a while.
Metallo was one of the first Superman villains reinvented for the '86 reboot. He was back to being John Corben, except now he was a professional killer, not a journalist. Again, his body was wrecked in a car crash, and he was rescued by Prof. Vale- except now, Vale, who had found and stolen the rocket that had brought Superman to Earth and was convinced the hero was part of a planned alien invasion, was obsessed with creating a means to destroy him, so the Metallo body was already made, he just needed a convenient brain to implant, and Corben just happened to supply it. Corben thanked him by snapped his neck. (Oh btw, the kryptonite Vale used was a chunk that had attached itself to the starship as Krypton exploded; for a while, it was the only kryptonite on Earth. As you can see, this origin was better thought-out.)
Corben soon runs into Superman, and their battle ends up both exposing Superman to kryptonite (for the first time for this version of the character) and partially destroying Corben’s outer human disguise, revealing his robotic body in a not-too-subtle Terminator rip-off:
Ironically, Superman was saved by Lex Luthor who wanted to get this mysterious new substance for himself (and probably would not stand for someone else killing his nemesis.) He captured Metallo, ripped off his “heart” with his own hands, then had him thrown away. It was from this k-chunk that he made the ring that he would wear for years. Metallo, however, survived on alternate power sources, and remained active as a villain (now looking completely robotic) minus the Kryptonite (he fought other heroes). Eventually, like a LOT of other DC villains did, he struck a deal with the demon Neron (in the “Underworld Unleashed” crossover) to gain new powers in exchange for his soul. He gained the ability to absorb machines into his body, thus allowing him to gain new weaponry or even grow to giant size. (Of course, he’s damned to Hell if he ever dies. Maybe like Luthor (who traded his soul for a cure to the kryptonite poisoning he gave himself with the ring) he doesn’t really believe he has a soul to lose. They’re wrong. ) Recently, Metallo seems to have lost his new powers and gone back to being a kryptonite-powered cyborg, but I don’t know the specific details.
The most popular version of Metallo is likely the one from Superman: The Animated Series. Again, he was John Corben, a criminal who was dying from a rare disease. Luthor convinced him he could save him in return for being turned into the kryptonite-powered Metallo to kill Superman. However Corben was shocked to find that while he looked human, he had no sense of touch anymore, so he felt no pleasure. This made him turn against Luthor as well. He would later join the Legion of D- I mean The Society in the Justice League series.
The problem with Metallo is that he’s a one-trick pony: with Kryptonite he’s a danger to Superman, without it he’s not. He’s also nothing special without it- just another evil cyborg who looks too much like The Terminator. (Btw, don’t you think Superman should’ve prepared a lead-lined armor suit to deal with all these kryptonite-using villains? Far as I know, he never did.)
Next: In-keeping with the Kryptonite theme, we meet: The Kryptonite Man!