Nightmare Sans

A black goopy skeleton. Goop covers his right eye and clothes. He wears a black hoodie, shorts, and slippers. His left eye glows cyan, and his right eye is covered by goop. He can summon black tendrils from his back. He feeds on the negativity of others and can sense their negativity, since he used to be the guardian of negativity. Nightmare travels the multiverse into other AUs to feed on their suffering. He hates his brother, Dream Sans, the guardian of positivity. He lives in his castle in Dreamtale.