Red is the lead bird from Rovio's Angry Birds, the hugely popular mobile puzzle game first released in 2009, where players launch birds at structures built by green pigs. His short, frustrated call became one of the game's most recognisable audio cues and was soon clipped, shared and reused across gaming videos, edits and soundboards. As Angry Birds expanded into sequels, merchandise and films, the sound remained tied to Red's determined personality. It is still used today because it instantly reads as playful anger and cartoon momentum.