His past appearance is described as a demon with four arms and two faces.[2] Currently, he appears similar to the host he is in, but with spiked hair and with unique markings on his forehead, nose, cheeks, and torso. He also has a second pair of eyes under his normal eyes, which are usually closed.[3] Sukuna also has two lines on both his wrists, upper arms, circles on both his shoulders with a dot in each, two-segmented curve lines on his chest, and two lines on his stomach while possessing.