Zak-Kul

A “renegade scientist” of Kandor, sought by the Kandorian police for crünes he committed on Krypton, who escapes from the bottle city in October 1958, enlarges himself to normal human size by means of an ingenious size-changing apparatus powered by the radioactive element Illium-349 and then transforms himself into a Superman look-alike with the aid of an “electronic plastic surgery” machine—or “face-molding in strument”—on display in the Fortress of Solitude, all as part of an elaborate scheme to impersonate Superman permanently on Earth so that he can avoid being returned to Kandor to stand trial for his crimes.