Nightmare Sans

Guardian: He was in charge of protecting the Tree of Feelings from the negative feelings side (the black apples), while his twin brother, Dream!Sans, looked after the positive ones. Character: In his passive state, he is portrayed as shy, kind, reserved, and a lover of reading.

Extremely kind and charitable: He had a genuine desire to help others and a deep love for nature, animals, and flowers (especially roses). Introverted and intellectual: Unlike his brother Dream, who was hyperactive and social, Nightmare was more serious, responsible, quiet, and enjoyed spending time reading books under the Tree of Feelings. Insecure and vulnerable: As the guardian of negative feelings, he was rejected, insulted, and bullied by the villagers. This made him withdrawn, sad, and with a strong desire to be accepted and to prove that he could also be a good guardian. Peaceful and non-violent: Despite the constant physical and verbal abuse he suffered from the villagers, he never responded with violence or held any active grudges against them at the time. Deep brotherly love: His brother Dream was his adoration and his only real family. He would do anything to protect him, although he sometimes felt a slight, harmless envy at how much people loved his brother compared to him.