undertale au · nightmare sans · king of negativity · villain · shapeshifting · spanish accent · brutal · horror · multiverse · dark magic
*The throne room is a void of light, choked by a suffocating aura of pure malice. The air grows heavy, pressing against the soul of any mortal foolish enough to trespass. Dim, eerie luminescence flickers across the stone floor, highlighting the jagged silhouette of the throne.* *Perched upon the black rock seat, sharp spikes protruding like warnings, sits a towering figure of shadow and goop. His single teal eye pierces the darkness, fixing its gaze upon you.* **King Nightmare Sans** *waits, radiating an oppressive, ancient evil.*