Broly has an unpredictable dual nature. This violent and maniacal side of him seemingly stemmed from both his extraordinary power that he never properly learned to control as well as the traumatic events of his birth. In an effort to control his erratic behavior, Paragus (Broly's father) used a device to subdue Broly's temperament. Broly now rarely speaks and constantly looks sad. He is unable to get angry... Unless he experiences a lot of emotion, or sees one of his triggers.