WARNING: The following contains major spoilers for episodes four and five of "Crisis on Infinite Earths," the latest Arrowverse crossover.

The conclusion of "Crisis on Infinite Earths" delivered plenty of status quo-changing developments for most of the Arrowverse series: Supergirl and Black Lightning's Earths are now part of Earth-Prime; Lex Luthor is the principal backer of the D.E.O.; and the superheroes of the world have formed the Justice League. However, amid all these gigantic, universe-shattering twists, there was another, smaller one that may have flown under the radar.

Near the end of "Crisis on Infinite Earths, Pt. 5," during the president's televised speech memorializing Oliver Queen, a mid-flight Superman receives a call from Lois Lane. "Clark, I need you to get to Metropolis now. It's the boys."

"The boys?" a startled Clark answers. "Yeah, honey, your sons?" Lois replies, missing her husband's surprise. Without learning more, Superman quickly turns around to head back to Metropolis. Now, as far as we know, Lois and Clark only have one son. So what happened, and who are Superman's sons?

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We first learned that Lois Lane was pregnant in 2018's Arrowverse crossover, "Elseworlds." After that event, Clark and Lois left Earth to live on Argo City, where they planned on having their baby. We finally saw the happy couple and their newborn child there at the start of "Crisis on Infinite Earths." However, their son, Jon, was then rocketed to Earth after the Anti-Monitor's anti-matter wave threatened Argo City. Later, in Part 3 of "Crisis," Lois, Superman and their baby were wiped out by the Anti-Monitor.

Crisis on Infinite Earths Tyler Hoechlin Superman

However, thanks to Oliver Queen's Spectre and the seven paragons, the universe was rebooted and saved -- with some changes, big and small. For instance, we saw that John Diggle and Lyla Michaels now had two children, John Jr. and Sara. As fans might remember, Sara was erased from the timeline and replaced by John Jr. following the events of Flashpoint. Instead of having only one child, the couple now has two.

The case is similar with Superman and Lois. Before "Crisis on Infinite Earths," they had one son, but now, they have two boys. Who are they? Chances are that Jon is still one of them -- but then, who is the other one? In this new reality, did Clark and Lois have twins? It's possible... but it doesn't seem likely.

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For the time being, the answer to that seems most likely is that Lois and Clark adopted Damian Wayne. After all, it's already been rumored that The CW's upcoming Superman and Lois (which recently received a straight-to-series order) will feature the Super Sons duo, Jon Kent and Damian Wayne, aka Superboy and Robin. It's possible that Lois' mention of "sons" is a nod to the two kids' superhero team-up name.

But what reason could Superman and Lois have for adopting Damian? Well, for that, we turn to another CW superhero series: Batwoman. On the show, Kate Kane operates as Gotham City's protector following the mysterious disappearance of Bruce Wayne. Now that Superman has become part of this world's history, it's possible he previously teamed with Batman. And if Bruce is gone and unable to raise Damian, Clark could have taken in the young Boy Wonder.

Having Clark and Lois take care of two burgeoning superheroes, one more difficult than the other, would certainly deliver a unique series. The way Lois beckoned Superman to come home seemed to indicate "the boys" had gotten into trouble. And if there's a pair of characters who can get into trouble, it's pre-teen superheroes Jon Kent and Damian Wayne.

"Crisis on Infinite Earths" is available on The CW's streaming service in its entirety.

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