Luthor often wore a kryptonite ring on his right hand in Post- Crisis stories, but abandoned this tactic after prolonged exposure to its radiation resulted in cancer, requiring him to transplant his brain into a cloned body to survive. While masquerading as his own son Lex Luthor II, Lex occasionally wore high-tech "LX-20 body armor." During the Blackest Night crossover, he wore an orange power ring of avarice created by Ganthet, a former member of the Guardians of the Universe.