Hal joined Rovio's Angry Birds series in 2010 as the emerald toucan whose long beak lets him arc out and spin back toward the pigs' towers. His squawk became tied to that boomerang move, making it one of the flock's most recognisable character sounds alongside the classic launch cries. As Angry Birds clips, remixes and soundboards spread on YouTube, fans began lifting individual bird calls for edits and jokes. Hal's call stayed popular because it signals a return, so creators reuse it whenever something comes back unexpectedly.