 Over the decades, Luthor/Humanite plots against Superman by turning Joel Kent, the powerless son of Superman and Lois Lane, against his family, claiming that they deliberately exposed Joel to gold kryptonite to prevent him surpassing his father, Luthor creating a serum that restores Joel's powers long enough for him to kill his sister Kara on her wedding day before his body collapses as Luthor reveals the truth.In 1989, Superman catches up with Luthor/Ultra-Humanite and, while trying to escape a trap, inadvertently kills Luthor.In the sequel "Generations 2", in 2008, the Ultra-Humanite's remaining minions are revealed to still have Luthor's brain in cold storage, transplanting it into a robot body after it has gradually healed over the course of its time in stasis, but he is defeated by the assembled new generation of heroes, including Superman's grandson Knightwing/Clark Wayne (adopted by Bruce Junior after the death of Joel).