Sukuna takes the appearance of a young tall man with uniquely styled black hair with long spikes that jut out in every direction around his head, resembling a sea-urchin and with tattoos/lines on his forehead, nose, cheeks, upper body, and abdomen. He also has a second pair of eyes underneath his normal eyes. 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.