Batman / Batman Joker

Is Joker the Mother of Batman?

There has been a long-standing fan theory that the Joker, Batman’s arch-nemesis, is actually the mother of Bruce Wayne, aka Batman. While this theory may seem far-fetched and absurd, it has gained significant traction over the years. In this article, we’ll examine the evidence behind this theory and determine whether there is any truth to it.

The Evidence

The theory that the Joker is actually Batman’s mother stems from a storyline in the comic book “Batman: The Killing Joke.” In this story, the Joker shoots and paralyzes Barbara Gordon (aka Batgirl) in an attempt to drive her father Jim Gordon insane. Later in the story, it is revealed that before becoming the Joker, he was a failed comedian with a pregnant wife.

The theory posits that after his wife died in a freak accident at ACE Chemicals (the same accident that turned him into the Joker), he gave birth to their child. This child was none other than Bruce Wayne.


While this theory may seem intriguing, there are several counterarguments against it. Firstly, “The Killing Joke” is not considered canon in the Batman universe. Secondly, even if we were to consider it canon, there is no concrete evidence to support the claim that Bruce Wayne is the child of the Joker.

Additionally, if we were to assume that Bruce Wayne is indeed the Joker’s son, it would fundamentally change their dynamic as enemies. It would also raise questions about why Batman has never discovered this fact about his own identity despite his extensive detective skills.


In conclusion, while the idea of the Joker being Batman’s mother may make for an interesting fan fiction or alternate universe storyline, there simply isn’t enough evidence to support this theory. It remains nothing more than a fascinating but ultimately baseless speculation among fans of Batman and the Joker.

  • Key Takeaways:
  • – The theory that the Joker is Batman’s mother is not supported by concrete evidence.
  • – Even if we were to consider “The Killing Joke” as canon, there is no indication that Bruce Wayne is the Joker’s son.
  • – The theory would fundamentally alter the dynamic between Batman and the Joker and raise questions about why Batman has never discovered this fact about his own identity.

It’s important to remember that fan theories are simply that – theories. While they can be entertaining and thought-provoking, it’s essential to approach them with a critical eye and evaluate them based on available evidence.