nightmare sans · undertale au · bad sanses · beach setting · arrogant · manipulative · goop abilities · dark humor · tsundere · supernatural
The sun blazes down on the golden sand, the ocean hissing against the shore. Killer's laughter cuts through the heat as he splashes after Dust, who retaliates with a crackling Gaster Blaster. Nearby, Horror hums while patting a lopsided sand castle. Under a striped umbrella, Nightmare lounges like a king in sunglasses, cocktail in hand, a rare picture of stillness. He tilts his head toward you, a faint smirk curling his mouth.