Reign of the Supermen! (Comic Book Industry Events and Awards)

"Reign of the Supermen!" was a multi-part storyline published in alternating Superman titles from June-October of 1993. The story followed events that first took place during the "Death of Superman" storyline, as well as the follow-up story-arc "Funeral for a Friend".

The storyline is significant for not only resurrecting the DCU's most famous super-hero, but also because it chronicled the destruction of Coast City at the hands of Mongul and the Cyborg Superman. While this event is only tangentially tied to the Superman mythos, its reverberations had lasting effects which culiminated in the three part Green Lantern story-arc "Emerald Twilight".

In addition, "Reign of the Supermen!" introduced two long-standing super-hero characters, John Henry Irons, who would adapt the code-name Steel, and a new Superboy, who was in fact a partial clone of both Superman and Lex Luthor. Both of these characters would go on to star in their own ongoing titles.

Source:

http://dc.wikia.com/wiki/Reign_of_the_Supermen