The Hulk is a Marvel character who transforms from Bruce Banner into a huge green powerhouse when he becomes angry, and that change has become one of the most recognisable moments in superhero culture. Short clips of the transformation are widely shared on soundboards and in short-form videos, where the roar alone signals a sudden gain in strength or temper. Because the idea needs no explanation, creators keep returning to it for before-and-after edits, workout clips and exaggerated reactions, long after any single film or show.