Leeroy Jenkins comes from a 2005 World of Warcraft video in which a player, after his guild spends minutes carefully planning a raid on Upper Blackrock Spire, suddenly shouts his character's name and charges in alone, wiping the group. The clip spread across early gaming forums and YouTube, becoming one of the internet's first major gaming memes and a shorthand for reckless bravery. Two decades later it still appears in streams, edits and reaction videos because the setup and the charge are instantly recognisable even to people who never played the game.