In the Story known as Doomsday clock that was created to give the Watchmen an established place in DCU. The Superman theory is someone taking into account that 90% of metahumans come from the United States and that most of their origin stories are unknown. It suggests that the American government is creating metahumans and passing them off as superheroes to establish a new form of national security. It suggests that characters such as Superman were actually created by the Government. It was thought by Lois Lane that Lex Luthor was the creator of the Superman theory but this is proven to be false.