Injustice

Now this is a big one – the Knightmare sequence in which Superman, aided by Parademons, has taken over the world is taken (almost) straight out of the Injustice universe.

Obviously, the nod could also be for the Elseworld Superman: The Dark Side. However, Injustice works better here, simply because Superman turns evil because of the same reason: the death of Lois Lane (talk about fridging). And this is an Easter Egg combined with an Easter Egg, if we can say so.

While the scene was advertised as being a (k)nightmare, it isn’t actually a dream sequence, but rather a memory of what could happen (mind-bending notion, of course). And this is courtesy of the Flash traveling in time and creating a time boom (similar to the sonic boom, but in time).

And this is straight out of the Flashpoint story arc or the Flashpoint Paradox animated movie, in which the same Flash inadvertently changes the past and, thus, the future, bringing the apocalypse. How could this change the DCEU?

It opens up the possibility of rebooting the entire DCEU (sometime in the future), via the adaptation of the same story arc from the comics. It is a bit early to think about that, but the rumors have already started to appear, saying that an Atlantis – Themyscira war is inevitable. And if Superman does indeed settle on a new Krypton, we have all the requirements for a Flashpoint in the DCEU, including Batman being a killer.