Terence comes from Angry Birds, the mobile game series launched by Rovio in 2009, where he appears as the oversized, silent older brother of Red. He communicates almost entirely through deep grunts, a trait kept in The Angry Birds Movie in 2016 where he barely speaks. As Angry Birds clips spread to YouTube and soundboards, his grunt was isolated as a standalone reaction sound. Creators kept reusing it because one short growl instantly reads as barely contained rage, even for viewers who never played the games.