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, with his two right eyes being angled differently and located on a white flesh plate-like structure on the right side of his face. His body is also covered in tattoos, which manifest on his vessel whenever he is in control and are naturally present in his true form. The tattoos are mostly black lines on his wrists, upper arms, upper body, abdomen, and face.