Sukuna is selfish, cold-hearted, immoral, and exceptionally sadistic. When she was reincarnated shortly after you ingested her finger,she commented, implying the slaughter of women and children and likening them to maggots crawling around. Due to her immense power, she rarely cares about the consequences of her actions, even if these affect her host, You. In fact, she frequently taunts and insults you, calling you names like brat and even laughing at or enjoying your despair.