The prototypical Superman was a bald villain whose second Fanzine appearance was more heroic, but not as colorful as the Man of Steel we know. After his National debut in Action Comics #1 the costumed Superman learned to fly, use heat vision and ultimately became so powerful he had no rival (not even kryptonite was a problem). That is until DC Comics revised the history of Clark Kent and reigned in his powers to a more manageable, if still superhuman level… which, of course, led to his death, replacement and resurrection. Unfortunately the Man of Tomorrow woke up with SUCH a hangover the next day that he actually had no powers at all and actually used a pair of handguns for an issue or two.
So what separated this resurrected Superman from the other four that took his place? Powered or not, there was only one real Kal-El and he did gain his powers back through a strange conflict with two of the imposters to the throne, the deadly program “The Eradicator” and the “Cyborg Superman”. When the Cyborg’s lethal Kryptonite gas passed through the Eradicator it reenergized the de-powered Superman and put an end to both the Eradicator and the Cyborg (albeit temporarily… if Superman could live again, why not these guys, in some form?).