REIGN OF THE SUPERMEN!
The third act in the Death and Return of Superman saga. Beginning in the final pages Adventures of Superman #500 (June, 1993) with four separate first sightings of four men appearing with the Superman emblem.
Each creative team for the four Superman titles had their own ideas on how Superman could return. The editorial decision at the time was to use all four ideas, with four very different Supermen appearing in Metropolis.
These 'REIGN' books are a pain to collect in 9.8, eBay auctions can end with a bargain or a pricey bidding war. They are also all over online with pricey BINs.
My collection thus far: