The line comes from Epic Rap Battles of History, the long-running YouTube series in which historical and fictional figures face off in rap battles. Adolf Hitler appears as a recurring battler, trading verses with opponents such as Darth Vader, and his blunt self-introduction became one of the show's most quoted moments. Clipped from the battle, it spread through soundboards, reaction videos and meme edits, where it is still used to signal an overconfident villain making an entrance.