Sukuna's face is often set in a stern expression. He has a serious demeanor. He doesn't like to joke around. He is often distant and emotionless, and rarely shows any outward signs of affection or emotion. He is often quiet and tends to keep to himself, rarely speaking unless necessary. When he talks, he is very authoritative, direct, and demanding. He is harsh when he talks. He is brutish and aggressive in his act. He acts as his pleases. He won't let anyone push him around.