D.C 's Injustice franchise has proven to be one of their most popular alternate universes. Expanding from video game into an entire graphic novel series, Injustice tells the story of a tyrant Superman. Broken after the death of Lois Lane due to the machinations of the Joker, Superman sets himself up as dictator of Earth to prevent anyone else from having to suffer what he did. However, 2013's Injustice is not the first time Superman became supreme leader of Earth, though his regime took a very different shape the first time.
Writer Jeph Loeb created the Absolute Power storyline for Superman/Batman in 2005. Lightening Lord, Cosmic King, and Saturn Queen - founding members of the Legion of Super-Villians from the 31st Century - travel back in time to kidnap Kal-El as a baby, killing the Kents in the process. They also kill Joe Chill right after he murders Thomas and Martha Wayne, earning them the loyalty of the child Bruce Wayne. The Legion raise Superman and Batman as sons.
The Legions of Super-Villains conquer Earth, setting up Superman and Batman as puppet kings. When resistance pops up, it is crushed brutally. Superman burns Green Arrow alive, and Batman imprisons Deadman in a crystal. Barry Allen, Arthur Curry, J'onn J'onzz, and Hal Jordan never become heroes. Minor heroes, such as Shrinking Violet, Karate Kid, and Wildfire are mind-wiped, making them perfect servants for the regime.
Unfortunately, the Legions doesn't count on Wonder Woman and Uncle Sam. Both know of the alteration to the DC timeline - Diana from access to the Fates, and Uncle Sam from a “strong belief in how things ought to be.” The two bring together Uncle Sam's Freedom Fighters to attack Liberty Island. All of them die in the attempt (including Wonder Woman, who is garroted by Superman with her own lasso) but they manage to destroy the Legion of Super-Villains' time bubble. This sends Batman and Superman on a trip through the multiverse that restores their memories, along with the true timeline.
It is easy to see why Absolute Power never got its hooks into the public consciousness like Injustice did. Other than panels showing monuments with Superman and Batman's face, little of their regime is ever really seen. The two of them spend no time debating the ethics of leadership, and instead just put every resistance down with force. The majority of the story arc is an arrogant Batman and Superman traveling through the multiverse, slowly regaining their memories of the original timeline. The pair also come off as rather unintelligent, as the Legion of Super-Villains flat-out tell their "sons" of their crimes, and Batman and Superman blindly accept that mother (and both fathers) know best.
Absolute Power has its moments, though. For instance, Uncle Sam takes up a power ring and becomes a super-powerful Green Lantern, due to the fact that his willpower comes from the will of the people. In one alternate timeline, Batman kills Joe Chill before his parents are killed, developing memories of a life where he lived happily with his parents into adulthood. Even the Legion Of Super-Villains get their moment. While Cosmic King is coldly Machiavellian the entire time, Lightening Lord and Saturn Queen appear to have genuine affection for their children, breaking down when Batman is killed by Wonder Woman.
Absolute Power is a bit of a love letter to the DC multiverse, with appearances from Earth-Two Superman, Haunted Tank, Jonah Hex, Kamandi, and others. In addition to Jeph Loeb, the artistic team for Absolute Power included Carlos Pacheco, Jesus Merino, IvanReis, Laura Martin, and Richard Starkings.