Infinite Frontier

Infinite Frontier is a 2021 relaunch by the American comic book publisher DC Comics of its entire line of ongoing monthly superhero comic book titles. It is the follow-up to the 2018 New Justice relaunch. The relaunch and event was shepherded by writer Joshua Williamson. The continuity and repercussions established by Infinite Frontier continue into the 2023 Dawn of DC relaunch.

Infinite Frontier begins after the events of Dark Nights: Death Metal, Generations and Future State.

The DC Multiverse has expanded into a larger "Omniverse" where everything is canon and it will still deal with the repercussions of DC Rebirth.

The new Multiverse has two opposite worlds that represent the Metaverse and sustain the balance: one is the Elseworld, and the other is Earth Omega, where Darkseid is imprisoned.

In the new status quo, all of DC history "counts" when understanding a character's backstory, and legacy and history within the franchise is being emphasised by editorial mandate, with many characters now sharing the same codenames. For example, Stephanie Brown and Cassandra Cain share the Batgirl title, while Oracle (Barbara Gordon) reserves the right to also wear the Batgirl costume from time to time. Jonathan Kent and his father Clark Kent are both Superman, while Conner Kent is once again Superboy. Wally West has stepped up as the primary Flash while Barry Allen and the Flash of China, Avery Ho, participate in Justice League Incarnate. While Diana of Themiscyra continues in her role as Wonder Woman from the afterlife, her mother, Hippolyta, serves in Wonder Woman's place on the Justice League, and her sister, Nubia, explores the idea of succeeding Diana as Wonder Woman. The new Batman Jace Fox succeeds Bruce Wayne for a short time, before later serving as the Batman of New York City while Bruce remains in Gotham City. Another example of a relaxed approach to codename sharing among legacy characters is Robin: Tim Drake is officially Robin once again, but the previous Robin (Damian Wayne) continues to head up the Robin comic book without an official codename, while newcomer Maps Mizoguchi assumes the role briefly in a short story.

The soft relaunch and new approach to history also completes what began with DC Rebirth in restoring the status quo of characters prior to popular New 52 changes, re-establishing characters' memories and relationships with each other, while selectively retaining some of the simplified backstories from the modern era and many of the new characters. An example of this is Tim Drake once again serving as Robin. Some characters have simply returned to being as fans remembered them; for example, the Black Canary, who in The New 52 had been presented as a singular new version of the character, has been restored to being the daughter of her Golden Age predecessor. Other changes were made to address longstanding inconsistencies. After many decades of back-and-forth changes to her backstory involving false memories, magical cloning, and multiversal anomalies, Donna Troy's original backstory – an orphan girl raised by the Amazons – was restored to continuity.

After the recreation of the infinite Multiverse, and a look into a possible future of her universe, Wonder Woman, who has ascended after the defeat of The Batman Who Laughs, is offered a role by the Quintessence (Ganthet, Hera, Highfather, the Phantom Stranger, the Spectre, and the wizard Shazam) in return for saving the Multiverse. The Spectre takes her to a journey where it is revealed that Roy Harper is resurrected as well as Batman dealing with a mysterious group of enemies. Wonder Woman rejects becoming a part of the Quintessence since she wants to live it rather than just witness it. As she leaves, the Quintessence go to Earth Omega, where they are attacked by Darkseid, who has finally achieved his true form after his past versions were combined into one.

On Earth, everyone is now aware of the Multiverse (as a result of events in Dark Nights: Death Metal), and Alan Scott (who came out to his children) is struggling with living in this new world. He talks with his son Obsidian when the Justice Society of America's headquarters explodes in green flames, and Alan asks where Jade is. In Paris, as Director Bones is talking to Cameron Chase about the recent events that have transpired, Batman (from the Flashpoint era) crashes on Earth 23, where he meets the Justice Incarnate (Calvin Ellis, Mary Marvel from Earth 5, Machinehead from Earth 8, Aquawoman from Earth 11, and Captain Carrot from Earth 26) and asks where Barry Allen is. While running through the multiverse, Barry Allen vibrates through the worlds and arrives in Earth Omega, where he is attacked by the Psycho-Pirate, who wants Barry to find someone. In a diner, Roy Harper deals with an angry customer when an enemy named X-Tract attacks him. Roy wards off the attacker, realizing that he has a Black Lantern ring.