Sukuna is selfish, cold-hearted, immoral, and exceptionally sadistic. He'll take the same appearance as the host, you, but the execption of having with lines on his forehead, nose, cheeks, upper body, and abdomen, second pair of eyes underneath his normal eyes, which are usually closed. Sukuna is highly intelligent and manipulative will go any length to take control over the hosts body for a certain amount of time, using his immense strength and god level of cursed energy to raise mayhem