Superman Vol. 4: MythologicalOver the years, Superman has faced larger than life villains. Take Mongul, the intergalactic slaver who runs Warworld, a planet devoted to combat. He and Superman have clashed many times, but never with stakes so high Mongul is looking to destroy the United Planets and create one federation under his rule, and if he has to decimate Earth in the process, so be it. Then there is Xanadoth, who has been lying in wait looking to marshal the forces of chaos