WARNING: The following contains major spoilers for "Crisis on Infinite Earths," the latest Arrowverse crossover.

In the fourth part of "Crisis on Infinite Earths," Arrowverse fans got their biggest shock yet when Ezra Miller made a cameo as Barry Allen from the so-called DC Extended Universe. His speedster met Grant Gustin's after the latter was separated from the other Paragons in the Speed Force. As they talked, it became clear that Miller's Barry was getting clues as to the existence of a multiverse, as well as the idea for his superhero name.

The DCEU Flash then disappeared, and the fight against the Anti-Monitor continued, leaving social media electrified with what audiences just witnessed -- a crossover no one saw coming. However, this cameo holds the potential to be even more important, as it may have fixed the DCEU's biggest problem: how to bring a new Batman and Superman into the fray.

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From this meeting in the Speed Force, it's safe to say the DCEU was disintegrated by the Anti-Monitor's wave of death. However, with the Multiverse being restored, the status quo has been shifted as Oliver Queen, aka the Spectre, tinkered with realities to merge Earths and create Earth-Prime. This means Supergirl, Superman, Flash, Black Lightning, Martian Manhunter and Batwoman are all on one Earth, with Flash and Supergirl having operated together for some time. This adjusts continuity and acts as a soft reboot, allowing the formation of the Justice League, all so the Arrowverse could tell new stories and create all sorts of team-ups as well.

This is exactly the kind of reset button the DCEU needs to move away from the Zack Snyder era of darkness and violence. We've seen some of this course-correction with Wonder Woman, Shazam! and Aquaman being more light-hearted along the lines of the MCU, but what really worries fans is how the Dark Knight and the Man of Steel could continue in this setting. For Batman, it's a bit trickier as Ben Affleck retired the cape and cowl, and director Matt Reeves moved on with Robert Pattinson as the Caped Crusader in a new Gotham with a cast far away from Snyder's. Reeves has said this is standalone and outside the DCEU, but with Spectre reformatting worlds, there's nothing to stop Warner Bros. from just slotting Reeves' world into the DCEU and saying it's due to the restoration of the Multiverse.

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After all, Spectre had some recalibrating to do to get Argo and such on Earth-Prime, so what if he erased the bad parts of the DCEU or the ones Warner Bros. didn't want to move forward with. Henry Cavill has said he'd love to continue as Superman but if the Last Son of Krypton is to be replaced, again, this provides the out. His career is taking off even more as seen with stints in Mission: Impossible and The Witcher, and it's taken so long to get news on a sequel, many are speculating this standstill moment means there'll be no progress.

Henry Cavill as Superman

And seeing as Cavill is so intrinsically tied to Snyder's realm, a new Kal-El can enter the mix and once more be attributed to the restoration point. In other words, merging worlds is the deus ex machina the DCEU was looking for all along and honestly, no one ever thought it'd have come from the TV-verse.

Let's be honest, replacing the World's Finest has been simmering for quite some time and regardless of who you want to come in, the exit door's been opened wide with this development. It may have been a huge surprise but the soft reboot button's now there to hit for DC's two most iconic heroes. The film-verse can now boot out and pull in new faces to the DCEU at will to integrate into the warm tones and inspirational feel moving forward, and one can't help but think this could take Warner Bros. a step closer to what Marvel Studios has achieved.

"Crisis on Infinite Earths," the latest five-show crossover between all the Arrowverse series, is now available on The CW's streaming service in its entirety.

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