The Batman Universe

This is a different Batman from the established DCEU character, which might be regarded as a fault, but there are tons of Easter eggs and references to the Caped Crusader. The first shows up in the background, as Batman battles his first Parademon and relates to Black Mask via the Janus logo on a building.

Then there’s the ACE Chemicals logo in the scene in which Bruce Wayne, Barry Allen, and Diana Prince see the Bat signal in the sky. Another  related location is the Arkham Asylum, which is a Joker reference that reveals that Lex Luthor is no longer in residence there.

You probably spotted Alfred’s Penguin tease, since it was featured in promotional trailers and clips. However, it might have been more difficult to spot another Easter egg in regard to Crispus Allen, a Metropolis detective who transferred to Gotham, and who also became The Spectre. He informed Commissioner Gordon that additional scientists had been abducted.

There are also references to earlier Batman movies, the most notable being the use of the Batman theme. But the movie also sends a nod to the do you bleed scene in Batman v Superman. And it can be argued that the Waynes’ deaths show up in Justice League, particularly when the bullet casing falls in slow motion during Batman's suicide mission. In addition, Batman pleads for Superman’s resurrection, saying that there’s a fraction of a chance that the Man of Steel might be helpful. The playing well with others line may be yet another Batman v Superman reference (Batman became a murderer after refusing to replace the deceased Robin).

Obviously, tons of Justice League’s Easter eggs can be traced back to comic books. Most interestingly, we see Batman on horseback, which might be a callback to The Dark Knight Returns. But check this one out, too:

What else can we add here, besides Gotham’s Tim Burton feel?