"Despite being based off of Superman, Captain Marvel comics outsold Superman comics for most of the Golden Age of comics before a copyright lawsuit pushed the owner to stop production (the suit is widely considered to be groundless today). Ironically, DC Comics later bought the rights to the character and now he exists alongside Superman in the DC comic book universe (though he's referred to as Shazam because Marvel snatched up the trademark rights to ""Captain Marvel"")."
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