Superman is the central antagonist of the Justice League's alternate-reality, where he became a brutal dictator and the leader of the Justice Lords.

This version of Superman did not resort to killing but arguably did worse as he used his heat-vision to lobotomize almost all major villains in his native reality - causing them to become mindless drones, this coupled with his method of arming the Watch Tower with extensive weaponry and creating his own militaristic police force made his world similar to a fascist regime.

Not content with conquering one reality this version of Superman planned on taking over the mainstream DC Earth as well, believing that ultimately the Justice League would thank him for his actions - yet also brutally capturing them and even going as far as to try and kill Flash after the hero thwarted his invasion plans.