Kil-Lor

A would-be tyrant and dictator of the planet [[Krypton]] whose plot to overthrow the [[Kryptonian]] government and seize control of the planet is thwarted by [[Superman]] when, having journeyed back across the time-space barrier to Krypton at a time predating the marriage of his own parents (see [[Jor-El]]; [[Lara]]), the [[Man of Steel]] tricks the super-powered Kil-Lor into killing himself by overexposure to [[Kryptonite]] (S No. 123, Aug 1958: chs. 1-3 ”The Girl of Steel”; “The Lost Super-Powers”; “Superman’s Return to Krypton”).