He claims Gardner Fox's dreams were tuned into Earth-Two, explaining their depiction as a fictional world in earlier Barry Allen stories.
Most of the following costumed mystery men history is based on the Earth-Two Superman's initial appearance, where these previously independent operating heroes begin to reliably interact.
[2] Most superheroes from the Golden Age later followed this trend of operating publicly, while wearing distinctive costuming and interacting in a largely shared universe.
Crisis on Infinite Earths (1985–1986) was an effort by DC Comics to clean up their continuity, resulting in the multiple universes combining into one.
Since then, a handful of characters originating from Earth-Two have consistently remained part of the merged Earth, including Power Girl, Jay Garrick, and Alan Scott.
Superman and Lois Lane from Earth-Two (along with Superboy from Earth Prime, and Alexander Luthor Jr. from Earth-Three) were transported into a ghost-like "paradise dimension" tangential to the new universe.
Inexplicably, Earth-Two was the only returning world that was devoid of most people, except the Justice Society, Kal-L, and his wife Lois Kent.
In the final issue of the 52 weekly series, it is revealed that fifty-two duplicate worlds have been created and all but New Earth have been altered from the original incarnation.
[6] The post-Crisis Earth-2 made its first appearance in a single panel of 52 Week 52 where it resembled the pre-Crisis Earth-Two, where a newspaper article says that this world's Superman and Power Girl are missing.
The Flashes of New Earth (Jay Garrick and Wally West) briefly glimpsed this world with Robin (Dick Grayson) and Huntress in action (during their travel with the Cosmic Treadmill as shown in Justice Society (vol.
Power Girl crash lands and unconscious, on the closest parallel of the 52 Multiverse, the post-Crisis Earth-2, which appears similar to the pre-Crisis Earth-Two.
In Earth 2, Superman, Batman, Wonder Woman, and Catwoman seemingly gave their lives in order to repel the Apokoliptan invasion, leaving behind a world with no heroes.
[17] When the Earth-2 Solomon Grundy threatens the world, three new heroes team up to defeat him: the Flash (Jay Garrick), Hawkgirl (Kendra Saunders), and Green Lantern (Alan Scott).
Fate (Khalid Ben-Hassin), the Atom (Al Pratt, now nuclear-powered), the Sandman (Wesley Dodds), Mister Miracle, and Big Barda.
Villains include Solomon Grundy, a now-villainous Terry Sloan, Wotan, Steppenwolf and what was thought to be a surviving, Darkseid-brainwashed Superman, which turned out to be a very powerful but genetically unstable Bizarro-type clone.
[19] Other new characters introduced as the series progresses include a female Red Tornado (an android with the consciousness of Lois Lane that was uploaded into it by Sam Lane and Robotman), a hyper-intelligent knowledge-assimilator known as Accountable (Jimmy Olsen), a new Batman (Thomas Wayne using Miraclo), a new version of Aquawoman (Marella), and a new Superman (Val-Zod, a Kryptonian and a childhood friend of Power Girl's who had been imprisoned by Terry Sloan).
Over the course of the series, several new characters are introduced, such as Yolanda Montez, an Avatar of the Red who is a counterpart of Alan Scott; a second Red Arrow, an Earth 2 equivalent of Oliver Queen; Ted Grant, a former boxer; and Dick Grayson, a journalist who goes on a mission to find his son after his wife Barbara Gordon is killed during the invasion.
Others change alignment; Wonder Woman and Steppenwolf's daughter Fury sides with Mister Miracle and the other heroes after Big Barda reveals her loyalty to Darkseid.
[citation needed] The fictional countries of Dukalia, Luxor, Napkan, Nastonia, Oxnalia, Thornia and others existed on the Axis side in WW2 (though most of these disappeared when the US entered the war).
In addition, masked crimefighters are introduced decades earlier than in other universes later identified within DC Comics, and these participated in such historic conflicts as World War II.
Other events taking place decades earlier include the destruction of Krypton and the advent of advanced technology such as interstellar transportation and time travel.
Because Earth-Two as presented did not match up with the actual comics of DC's Golden Age, other alternative Earths were used to explain the discrepancies.
Earth-E (Earth-216) is the world where the Super-Sons adventures happened and was used to explain 1950s Batman and Superman stories that didn't fit with either Earth-One or Earth-Two history.
Other notable character differences include a younger version of Alan Scott, the Golden Age Green Lantern, who leads the Wonders; Superman is succeeded by Val-Zod, a black-skinned Kryptonian pacifist; Aquawoman (Marella) is the Queen of Atlantis; Terry Sloan, formerly known as Mr. 8, is a universe-hopping villain; and Oliver Queen is the Red Arrow.
The ensuing Earth-2 (2012–2015) and Earth-2: World's End (2014–2015) stories depict the formation of a new group of heroes ("Wonders") who try and fail to save the Earth from Darkseid's second invasion attempt.