Kryptonite Man

The Kryptonite Man is the name of several supervillains who appears in stories published by DC Comics. The character first appeared as Kryptonite Kid in Superboy #83 (Sep. 1960), and as Kryptonite Man in Superman #299 (May 1976). The original Kryptonite Man started out as a teen-age alien criminal called the Kryptonite Kid, who flew in space through a green kryptonite cloud and became imbued with the properties of Kryptonite. This incarnation is most well known pre-Crisis on Infinite Earths from his appearance and death in the non-continuity story Superman: Whatever Happened to the Man of Tomorrow?. A second Kryptonite Man appeared in Superman #397. He had been the ruler of a race of humanoids who inhabited Krypton eons before...