While perhaps not truly infinite, the Arrowverse has been revealed to be far larger than previously imagined, thanks to Crisis on Infinite Earths. The crossover event has confirmed that many worlds created for other television series and movies based on DC Comics creations are all part of the same shared multiverse.
The Arrowverse first came into being during season 2 of The Flash, as Barry Allen and his allies fought Zoom - a villainous speedster from the alternate reality of Earth-2. As the season progressed, they fought many other villains from Earth-2 and joined forces with Jay Garrick - The Flash of Earth-3. This paved the way for other Earths to be introduced, and for series like Supergirl to be established as part of the same shared multiverse.
Please note that this is not a comprehensive list and that Earths which have been listed but not defined (such as the many numbered Earths on Jay Garrick’s multiverse map) are not included. The following Earths have been specifically identified, either through the shows or associated media like the Crisis on Infinite Earths comic tie-in.
Earth-1
The setting of most of the Arrowverse shows, Earth-1 was said to be the center of the Arrowverse and the access point to every other Earth in existence. This was confirmed during Crisis on Infinite Earths, as Earth-1 was seen as the center of the multiverse and the last to fall to the Anti-Monitor’s wave of anti-matter. It seems that the events which defined the other Earths were based around changes to the key events that occurred on Earth-1.
Earth-2
The first alternate Earth explored in detail, Earth-2 was also the first to be destroyed during Crisis on Infinite Earths. Ruled by the speedster tyrant Zoom, Earth-2 was largely defined by its lack of heroes, as Oliver Queen was lost at sea and Barry Allen wasn’t empowered to become The Flash. Additionally, many of the heroes of Earth-1 were villains in this reality, with Black Canary, Vibe and Firestorm becoming Black Siren, Reverb and Deathstorm and Caitlin Snow being completely taken over by her Killer Frost persona.
Earth-3
Earth-3 was the homeworld of Jay Garrick; an older speedster who was also known as The Flash, whom mentored the Barry Allen of Earth-1. This Earth was somewhat old-fashioned, having a level of technology comparable to the 1930s. Gangsters still used Tommy guns and zeppelins were a popular mode of transportation. The villains were also decidedly goofier, with The Flash’s arch-enemy being a version of The Trickster who resembled the classic Joker.
Earth-9
The opening of “Crisis on Infinite Earths - Part 1” revealed that Earth-9 was the home of DC Universe’s Titans. It is still unclear if the streaming service’s other live-action programming, such as Doom Patrol, is set on the same Earth. Either way, it was clearly Titans’ versions of Hawk and the Jason Todd Robin who were vaporized during the Monitor’s opening monologue.
Earth-12
Home to Nihilist scientist Harrison Wolfgang Wells, little was known about Earth-12 beyond it being a scientifically advanced world and its version of Harrison Wells being inexplicably German. We know it had an active publishing industry, as Wolfgang became a best-selling author after writing a guide to his philosophy, Everything Is Meaningless, So Why Did I Buy This Book? Earth-12 was also depicted as being advanced enough for inter-dimensional communication to be fairly commonplace and Wolfgang was shown to be in frequent contact with other versions of himself from around the Arrowverse.
Earth-13
Earth-13 was a world where the laws of magic reign supreme over science, and elves and dragons still live alongside humans. Most of what we know of Earth-13 was revealed by the wizard Wells The Grey in one posting on the Chronicles of Cisco blog. For his part, the Cisco of Earth-1 believed that the Wells of Earth-13 was a crazed Lord of the Rings fanboy whose love of the halfling’s leaf had clearly slowed his mind. Of course, Cisco may have been biased, as Wells the Grey’s description of Earth-13 spoke of a race of humble furry-footed folk called Ciscos.
Earth-15
Earth-15 was a dead world, notable only for its being completely uninhabited. This was due to an undefined disaster in 1986, which left it a barren wasteland. Cisco Ramon used his Vibe powers to dispose of various dangers safely on Earth-15, most notably using it as a venting ground for the excess radiation generated by the metahuman called Fallout in “The Trial of The Flash.”
Earth-16
Revealed as an alternate Earth rather than a potential future of Earth-1, the Legends of Tomorrow once traveled to the future of Earth-16 and helped an older version of Oliver Queen save his city from the son of Deathstroke. Curiously, this Earth seemed to have some common knowledge of travel between Earths, as a cocktail waitress named Olivia from Earth-16 responded to an personal ad that Cisco placed with an inter-dimensional dating agency in The Chronicles of Cisco. Yet the future Oliver Queen in “Crisis on Infinite Earths - Part 1” seemed utterly ignorant of the idea of alternate Earths and time travel. Perhaps his version of Barry Allen changed a few things thanks to their version of Flashpoint.
Earth-17
Another Earth whose existence was revealed through communication with an alternate version of Harrison Wells, Earth-17 seemed to be a world of advanced scientific achievement. Its version of Harrison Wells (who spoke with a Received Pronunciation British accent) was one of the few people intelligent enough to crack the cryptogram devised by Harry Wells of Earth-2 as a means of testing replacements for his position on Team Flash. This Harrison Wells also wore a top hat with goggles, suggesting that Earth-17 had a similar Steampunk aesthetic.
Earth-18
First seen in “Crisis on Infinite Earths - Part 2,” Earth-18 was seemingly stuck in the Old West of 1800s America. It was there that Mia Smoak and Sara Lance encountered an alternate version of Jonah Hex, as he had laid claim to a mine that contained one of the last remaining Lazarus Pits in the multiverse. This version of Hex lacked the famous facial scars possessed by the Jonah Hex Sara knew from her adventures traveling through time. Sadly, his face did not remain pristine after a fight with the two women.
Earth-19
One of the most technologically advanced Earths in the Arrowverse, Earth-19 was home to the Collector Agency; a peace-keeping force which employed metahumans with super speed and dimensional travel powers to police the multiverse and deal with those criminals whose crimes took place across realities. Their ranks included the Accelerated Man, Gypsy, and Breacher. Earth-19 was also home to H.R. Wells; a version of Harrison Wells who was the public face of Earth 19’s STAR Labs and part of Team Flash during The Flash season 3.
Earth-22
Earth-22 was a harsh, apocalyptic world, comparable to the reality of the Mad Max movies. Ruled by a brutal tyrant known as Krung the Face Crusher, many of its inhabitants were forced to turn to cannibalism and merge their bodies with machines to survive. Despite this, the Harrison Wells of this world (a cyborg designated Wells 2.0) was a member in good standing of the Council of Wells. It was through him that we learned most of what we know about Earth-22 and how his world also once had a Cisco Ramon, who was reportedly delicious.
Earth-24
Home to the ever-optimistic life coach Harrison “Sonny” Wells, Earth-24 was somewhat behind Earth-1 technologically. Home video, for instance, was still based around VHS tapes rather than Blu-Ray discs. This didn’t bother Sonny Wells at all, however, as it has kept his official motto of “Be kind. Rewind.” relevant.
Earth-27
The setting of the middle-grade novel The Flash: Johnny Quick, Earth-27 was ruled by the Crime Syndicate of America; a villainous group made up of evil doppelgangers of the greatest heroes of other realities. The Barry Allen of Earth-1 joined forces with the heroic Rogues of Earth-27 to free their version of Central City from the control of an evil Flash known as Johnny Quick.
Earth-38
The setting of Supergirl, nearly half of Earth-38’s population was destroyed in the opening chapter of Crisis on Infinite Earths. Thankfully, the heroic sacrifice of Earth-1’s Green Arrow enabled an additional 1 billion people to escape to Earth-1 safely. It is suspected that when a new Arrowverse is reborn as a result of the Crisis, Earth-38 will merge with Earth-1 so that all The CW’s most popular superhero shows can be set on a single Earth.
Earth-47
Earth-47 was the homeworld of H. Lothario Wells; a version of Harrison Wells who was both a genius scientist and self-described “publishing tycoon & general champion of free speech.” While it was never specified exactly what he published, his mention of dress-up nights at his mansion and his manner of dress (i.e. smoking jackets and dressing gowns) suggested that he was also Earth-47’s version of Playboy Magazine founder Hugh Hefner. Earth-47 was notable for having dragons, as Breacher of Earth-19 announced his intention to retire to Earth-47 to start a dragon farm.
Earth-66
Setting to the 1966 Batman television series staring Adam West and Burt Ward, this kinder, gentler Earth was home to a version of Batman and Robin who worked directly with the police and villains who were more comic than threatening. Burt Ward had a cameo in “Crisis on Infinite Earths - Part 1,” proclaiming “Holy Crimson Skies of Death!” as the anti-matter wave destroyed his version of Gotham City.
Earth-74
Earth-74 was home to an alternate version of the Legends of Tomorrow who had abandoned their mission to preserve the timeline after one of their members died in action. Their version of the Waverider was adopted as a man-cave by Earth-74’s Mick Rory, where he could work on his novels in peace, apart from the interruptions of Leonard; a snarky artificial intelligence which sounded suspiciously like Earth-1’s Captain Cold.
Earth-75
The Lois Lane and Clark Kent of Earth-38 briefly traveled to this Earth in “Crisis on Infinite Earths - Part 2” while searching for the Paragon of Truth. They were forced to leave shortly thereafter, having learned of Lex Luthor’s plan to kill every Superman in existence before the anti-matter wave beat him to it. Little was revealed about this Earth beyond its versions of Lois Lane, Clark Kent, and Lex Luthor being perfect doppelgangers for their Earth-38 counterparts.
Earth-76
The classic Wonder Woman got an Arrowverse cameo in the Crisis on Infinite Earths Giant #1 comic. The brief appearance, during which Diana Prince changed into Wonder Woman with her trademark spin, confirmed her Earth as being Earth-76. Presumably it was named it in honor of the first full year the Wonder Woman television series aired, as the show premiered on November 7, 1975.
Earth-89
The setting of Tim Burton’s Batman films, Earth-89 made a brief appearance at the start of “Crisis on Infinite Earths - Part 1.” Reporter Alexander Knox looked to the reddening skies and the Bat-signal, muttering that he hoped Batman was watching the skies too. This Earth was presumably named after 1989 - the year Batman was released.
Earth-90
Earth-90 was the reality of the 1990 The Flash television series. It stands unique among the infinite Earths in that it was established as part of the Arrowverse one year before Crisis on Infinite Earths, during the 2018 crossover event Elseworlds. We know little of the superheroes that followed after Earth-90’s Barry Allen in defending this Earth, but it was suggested that this Earth’s version of John “Spartan” Diggle was a Green Lantern.
Earth-96
Home of the Superman who was revealed as the Paragon of Truth, Earth-96 was inspired equally from the first five Superman movies and the classic graphic novel Kingdom Come. It was named in honor of the year in which Kingdom Come was first published - 1996.
Earth-99
Revealed in “Crisis on Infinite Earths - Part 2,” Earth-99 seems a better fit for the Dark Multiverse than the Arrowverse. Its version of Batman went mad with power, falling to darkness while waging his war on crime and brutally killing his enemies. He eventually turned upon his allies too, killing Earth-99’s Superman in a fight that left him confined to an exoskeleton and barely able to walk.
Earth-167
The setting of Smallville was confirmed to be part of the Arrowverse during “Crisis on Infinite Earths - Part 2.” A brief scene established that Clark had given up his superpowers to have a family with Lois Lane and that they moved back to Smallville to run the Kent farm. The scene also revealed that their version of Lex Luthor had become President of the United States.
Earth-203
Home of the Birds of Prey television series, Earth-203 was officially designated in the opening scene of “Crisis on Infinite Earths - Part 3.” Ashley Scott and Dina Meyer reprised their roles as Helena “Huntress” Kyle and Barbara “Oracle” Gordon, watching helplessly as New Gotham was erased from existence. Strangely, despite her currently playing the role of Alice on Batwoman, there was no cameo by Rachel Skarsten as Earth-203’s Dinah Lance.
Earth-221
Earth-221 was the homeworld of Sherloque Wells; the multiverse’s greatest detective. It was also notable for winters that last for eight months, a complete lack of Zamboni and its versions of the United States and Canada not celebrating Thanksgiving. It was presumably named in honor of 221B Baker Street - the London address of Sherlock Holmes.
Earth-666
“Crisis on Infinite Earths - Part 3” designated the setting of Lucifer as Earth-666. The episode saw John Constantine, who was unable to work his usual resurrection ritual to retrieve Oliver Queen’s soul, travel to this Earth along with John Diggle and Mia Smoak in order to call in a favor from the Devil himself. Precisely why Lucifer Morningstar felt indebted to Constantine was not explained, but hopes are high that story might yet be told in Lucifer season 5 or Legends of Tomorrow season 5.
Earth-N52
Typically there was little interaction between the Arrowverse and the world of comics. Indeed, the two had been presumed to be entirely separate multiverses. However, Crisis on Infinite Earths Giant #1 established that a version of the Earth known as Prime Earth in the comics existed in the Arrowverse as Earth-N52, presumably named after the New 52 Initiative that reset the DC Comics multiverse in 2011. Pariah witnessed this Earth being destroyed on the first page of the comic.
Earth-D
While writing the original Crisis on Infinite Earths comics, Marv Wolfman suggested that the new DC Universe to follow should be more racially diverse. He was outvoted, but Wolfman was allowed to introduce his vision of a new DC Universe as a parallel reality called Earth-D. On this Earth, the Justice League was known as the Justice Alliance, Superman and Supergirl were black, The Flash was of Japanese ancestry and Green Arrow was a Native American. One scene in Crisis on Infinite Earths Giant #1 (which was co-written by Wolfman) showed Earth-D being defended by the Justice Alliance and several heroes from Earth-1.
Earth-F
Fleischer Studios produced a series of 17 Superman cartoons from 1941-1943. These shorts marked the first time Superman appeared in an animated form and the cartoons are still admired today for their smooth animation. The reality of this version of Superman was designated as Earth-F in Crisis on Infinite Earths Giant #1, where a brief scene shows Fleischer’s take on Superman and Lois Lane in action.
Earth-X
Earth-X was an alternate version of Earth-1 where the Axis Powers won World War II. The first Earth to violate the truism that there were only 52 Earths in the Arrowverse, Harry Wells of Earth-2 once described Earth-X as “a place so awful, so horrific, no sane person would ever travel there.” It somehow became even worse in modern times, being ruled by fascist versions of Oliver Queen and Kara Zor-El; Dark Arrow and Overgirl. Thankfully, things improved dramatically after the events of Crisis on Earth-X, thanks to a team of heroes from Earth-1 lending the resistance on Earth-X a hand.
Black Lightning’s Earth?
“Crisis on Infinite Earths - Part 3” confirmed that Black Lightning was part of the Arrowverse, with Paraiah summoning Jefferson Pierce to aid in the destruction of the Anti-Monitor’s anti-matter cannon. Curiously, no official number or letter designation as given to Black Lightning’s Earth, despite its importance. Based on the designations of other Earths, it might be Earth-77 (after the year the first Black Lightning comic was published) or Earth-218, after the year the show premiered.
Next: Arrowverse’s Future After Crisis On Infinite Earths: Everything We Know