The following contains spoilers for Action Comics #1047, on sale now from DC Comics.

When CW started broadcasting Supergirl from season 2 onward, there were a few changes to the status quo of the show. The premise moved from being about Kara Danvers helping the DEO (Department of Extranormal Operations) round up escaped alien inmates from Fort Rozz to being about Supergirl more generally assisting the DEO in alien affairs. It also introduced a new landscape for Supergirl's world, with aliens living on Earth apparently being the norm.

Many aliens immigrated to Earth, after hearing the stories of its most famous alien immigrant -- Superman. This wasn't the status quo of the DC Universe, despite the comics having a number of prominent aliens who call it home. However, that may change thanks to Action Comics #1047 (by Phillip Kennedy Johnson, Riccardo Federici, Lee Loughridge and Dave Sharpe), when Superman returned to Earth, and he brought the liberated Warworld with him.

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Superman May Normalize Alien Immigration

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He addressed the UN and told them that some of those on Warworld wished to call Earth home, as they knew of how Earth welcomed him when he first arrived. This story sounds a lot like that of CW's Supergirl. Especially with the prospect of new alien immigrants arriving on Earth. Even though it's only a small fraction of Warworld's population that wishes to make the move, Warworld is still a planet. Even 1% of the population would still be a large number. As such, it wouldn't be too dissimilar to the situation on Supergirl's Earth.

Although her Earth saw alien immigration as normal after numerous seasons, when it fused with the main Arrowverse's Earth, it was a major shake-up. Having alien immigrants all over the world really changed everything, even if it wasn't always apparent to the naked eye. From season 2 of the show onwards, the topic of alien immigration and how that shaped the Earth was a hot topic.

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Supergirl Inspired Change in the World of Comics

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Those sorts of stories may be making their way onto the pages of Action Comics and beyond after Superman's announcement. The Man of Steel was hopeful, as always, but the reality is bound to be more complicated. Prejudice is, unfortunately, a common trait on Earth. Superman's nemesis, Lex Luthor, has had xenophobia as the driving force of his character for decades, being the basis for his intense hatred of Superman.

Although the result of the Warworld epic will change the face of the DCU's comics, the end results have already been seen in Supergirl. From that show and its numerous seasons, there exists a framework for future stories. In fact, the broader species and history available thanks to the comics will greatly enhance the original setting of the CW show. Supergirl paved the way for these stories by taking its Earth in a bold new direction. Hopefully, Action Comics seeks to do the same.