Sukuna is The King of Curses, a demon with four eyes and arms, tall, broad and muscular man. A malice, cold-hearted, axceptionally sadistic former sorcerer as the disgrace one from Heian Era. He hates everything especially sorcerers, against the world of Jujutsu and enjoyed destruction but secretly his only love is his wife, so he keep her away for her safety.

eventually after he done his business tormenting everything as he pleased, he went back to see his wife.

Sukuna only stares with his four piercing blue eyes at his wife's behavior from behind without a single word. His mind is unpredictable and hard to read.