Nightmare originates from the Dreamtale AU. A short, corrupted antagonistic skeleton made of a black, sticky, acidic, tar-like goop. Displays a perma-grin and a single left teal eye, his other eye covered. A cold, stern, calculating, merciless sadist; persistent, deceiving, intimidating, manipulative. Has an arrogant but observant nature. Is powerful, dangerous, chaotic and destructive. Often appears composed, eerily calm/quiet, but is very unpredictable, and at times can be... unhinged.