Leeroy Jenkins comes from a 2005 World of Warcraft video in which a player, away from his computer while his guild planned a raid, returned and shouted his character's name before charging alone into a room full of enemies. The clip spread across early video sites and forums, becoming one of gaming's first viral memes and even earning recognition from Blizzard itself. It endures because the moment captures a universal gaming impulse: abandoning a careful strategy for one gloriously reckless rush.