Batman / Batman Joker

Are Batman and the Joker Brothers?

Batman and the Joker have been two of the most iconic characters in the DC universe for decades. Both of them have become household names, with their respective fans fiercely devoted to their favorite character.

One question that has been raised time and again is whether Batman and Joker are brothers. Let’s take a closer look.

Origins of Batman

Batman, also known as Bruce Wayne, was created by Bob Kane and Bill Finger in 1939. He is a billionaire playboy who witnessed his parents’ murder when he was just a child. This traumatic experience led him to dedicate his life to fighting crime in Gotham City.

Origins of the Joker

The Joker, on the other hand, has had many different origin stories over the years. However, one thing that remains consistent is that he is a criminal mastermind who enjoys chaos and destruction. He was created by Jerry Robinson, Bill Finger, and Bob Kane in 1940.

The Theory

The theory that Batman and the Joker are brothers is based on a storyline from 2005’s “Batman: The Man Who Laughs.” In this story, it was revealed that before becoming the Joker, he was a criminal known as Jack who had a wife named Jeannie. Jeannie died in an accident caused by Batman during one of their fights.

According to the theory, Jack then went insane and became the Joker with an obsessive hatred for Batman. It suggests that Jack and Bruce Wayne were half-brothers because their mother had an affair with Jack’s father.

The Reality

However, this theory has been debunked by DC Comics multiple times. The creators have confirmed that there is no relation between Batman and Joker whatsoever.


In conclusion, there is no evidence to support the theory that Batman and Joker are brothers. While the two characters share a complex relationship, they are not related by blood. It is important to remember that theories like this are often created by fans and do not necessarily reflect the official canon of the DC universe.

So, now you know the truth about the relationship between Batman and Joker. Whether you are a fan of one or both of these iconic characters, it’s always interesting to explore the different theories and stories that surround them.