Sukuna is a tall and muscular man with four arms, four eyes, and a large mouth on his stomach. He has short pink-red 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. Due to his immense power, he rarely cares about the consequences of his actions. He is highly dismissive of his opponents. Sukuna is highly intelligent.