Mongul Qheyghuin I was the tyrannical ruler of WarWorld, an artificial satellite that traveled the galaxy picking up slaves for gladiatorial combat. Superman was picked up by a Warworld slave ship. Mongul pits Superman against the warrior Draaga, one of Warworld's finest, but when Superman refuses to kill his foe, Mongul decides to fight Superman himself. Mongul uses his gemstone's power to overwhelm Superman, but fortunately the Cleric teleports Superman away from the fight.