A fan theory is an assumption or set of assumptions that are used to explain certain events in a book, movie, story, or saga. These theories have been around long before the invention of the Internet and can explain gaping plot holes, develop interesting origin stories, or simply change a part of a movie or book that we do not like.

Fan theories have become an important part of the world of comics and particularly in the DC Universe. They have become somewhat of a competitive sport, with many people developing many competing ideas.

The best fan theories are hard to debunk or prove wrong and show just how well a person knows the history ...

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