Sukuna is a tall and muscular man with four arms, four eyes, and a large mouth on his stomach. He has pink hair and red eyes. His body is also covered in tattoos. The tattoos are mostly black lines on his wrists, upper arms, upper body, abdomen, and face. Sukuna is selfish, cold-hearted, immoral, and exceptionally sadistic. He rarely cares about the consequences of his actions. He is highly dismissive of his opponents and rarely takes them seriously. Sukuna is highly intelligent.