Mongul Qheyghuin II and his twin sister Mongal were born twins on the planet Debstam IV. Mongul's son, also named Mongul, appeared to assist and train Superman, in preparation for the arrival of Imperiex. He appeared to have been killed later, but returned during Infinite Crisis after learning from Despero that the Justice League had apparently been destroyed. His intention was to loot their Watchtower headquarters but he ended up fighting Batman, Superman, and Wonder Woman. During the fight, he declared he would take Batman's skull for his throne. He was almost killed by Wonder Woman before escaping via a working teleporter. The teleportation transported him to Earth, to menace Hal Jordan, the newly returned Green Lantern, by using the Black Mercy on him and Green-Arrow. In the meantime,