10 DC Characters Who Killed Superman (And What Happened To Them)
2. Gog
Setting himself safely at the top of the murder list, Gog - the oddly terrible name for a man granted powers by the Highfather, Zeus, Shazam and Ganthet - proceeds to use his newfound abilities to kill a series of Supermen from different timelines, disrupting the DC timeline, and causing for a significant decline in the demand for red spandex capes.
Interestingly, while this crisis is fixed - with the current Superman going into Hypertime in order to make it so that Gog will never attack the 'proper' DC timeline. Somehow this doesn't involve killing Gog, but rather bringing him in front of the same men who gave him powers and showing them that it was their actions that had resulted in the destruction he had wrought.
Two different versions of Gog would appear later in the DC timeline, but these would prove to be different people, as this version of the villain ends the story by being reverted back his original human form.