There is no shortage of DC Extended Universe fan theories on the internet. Whether it’s Batman fan theories, Superman fan theories, Wonder Woman fan theories, or insane mega-conspiracies that tie every corner of the DCEU together, fans have not been shy about sharing their opinions about what’s “really” going on in the world of Gotham City and Metropolis. Though most DC fans won’t admit it, the fact that the DCEU’s storytelling has been more than a little confusing at times has only added to the appetite for fan theorizing.
DC movies (and comic book movies in general) often deliberately leave themselves open for fan speculation. It’s been a staple of the industry ever since Marvel Studios ended Iron Man with an internet-breaking tease for The Avengers. The DCEU has been intentionally ambiguous on many topics, and that’s allowed fans to determinedly pool their creative talents into filling in the gaps.
The Injustice Universe has quickly become one of the most popular “Elseworlds” in DC Comics continuity. Originally based on a video game, Injustice became an even bigger sensation with the start of a comic book adaptation, which is still ongoing six years later.
Many, like Reddit poster Kalfira, think that the DCEU has noticed the success of Injustice, and are taking the films in that direction. The alternate reality of Injustice features a Superman gone bad, embroiled in a war for control of the planet with Batman and his team of insurgents.
The "Knightmare" future glimpsed in Batman V. Superman definitely looks like something out of Injustice, and it would justify the grim and gritty style the films appears to aim for. It would also explain Flash’s cryptic warning of “Lois is the key,” as the death of Lois Lane is what precipitates the events of Injustice.
Aquaman (Jason Momoa) is scheduled to make his debut in Justice League, but some, like Alex Welch at SchmoesKnow, believe he’s already appeared in the DCEU. In a scene in Man of Steel, Superman (Henry Cavill) is knocked out and thrown into the ocean by an exploding oil rig. As he floats there unconscious, two whales are seen approaching, and next thing you know, Superman is safe on the shore.
It’s easy to see why some think that Aquaman used his power to communicate with sea life to send a couple of whales to Superman’s rescue.
The contest for most controversial word in the DCEU isn’t even close – it’s “Martha” in a landslide. The scene in which Batman (Ben Affleck) is halted from his attempted Krypto-spearing of Superman (Henry Cavill) by the name of, coincidentally, both of their mothers, looks ridiculous on the surface. But Reddit user TheLoverHorrific may have redeemed it with a believable fan theory.
In Batman V. Superman, Batman’s actions are motivated in part by the horrific visions of a possible future he sees, which are usually referred to as the Knightmare. In those scenes, a vengeful Superman accosts Batman with “She was my world and you took her from me.” Most fans assume the “her” in question is Lois Lane (Amy Adams), but it might not be.
When Batman heard the name “Martha,” it wasn't the name of his own mother that stopped him, but the introduction of another female person who is apparently important to Superman. After all, he is the world’s greatest detective, and this would be an important clue in the mystery of his Knightmare visions. The theory goes on to explain that by not spearing Superman, Batman allows for the rescue of Martha Kent (Diane Lane), thus preventing the Knightmare future from coming to pass.
The most popular, and perhaps the most likely, fan theory in the entire DCEU is the idea that Jared Leto’s version of the Joker is actually Jason Todd, former Robin. Reddit user Jason-G169 was one of the first to come up with the theory, and the clues are seemingly everywhere – from the Joker’s many tattoos to his apparent youth.
The general thinking is that Batman (Ben Affleck) failed to protect Todd from horrific treatment at the hands of the original Joker, leading him to break ranks with the Bat Family and murder the Clown Prince of Crime, before ultimately taking his place.