Gate of Babylon is the Noble Phantasm of Gilgamesh, the King of Heroes in the Fate series, first introduced in Fate/stay night. It opens golden portals to his vast treasury, from which he can summon and launch countless legendary weapons. The concept draws on the ancient Mesopotamian king and the mythic riches of Babylon, reimagined as a display of absolute power. In fan edits and memes, the sound has become shorthand for overwhelming confidence, wealth and a character who never needs to fight fairly.