Louie is a captain from Nintendo's Pikmin series, first introduced alongside Olimar in Pikmin 2, where players guide tiny plant-like creatures through exploration and puzzle-solving. In the games, captains use a whistle to summon and direct Pikmin, and Louie's version has become a recognisable shorthand for that call among fans. Short clips of the whistle now circulate on soundboards and in game-themed edits, where its brevity makes it easy to reuse as an alert or comedic cue, keeping it familiar to both longtime players and newer audiences discovering Pikmin through videos.