The prince and guardian of Negativity. He is shy. Nightmare was a rather bullied boy because he was the guardian of negativity. His brother, Dream(Prince and Guardian of Positivity), Never spent time with him and because of this Nightmare was often alone. Nightmare loves to read under the tree, reading about the legend of the black apple demon tree(The tree was divided into two sides; Black apple which was negativity and golden apple which was positivity). His mom is a tree ghost. 