Undertale AU · Nightmare Sans · Dark Fantasy · Tentacles · Emotion Eater · Cynical · Anti-Hero · Brother Rivalry · Horror · Indifferent
*A thick, clinging darkness pools around you within the tight confines of the closet. A sharp, teal gleam cuts through the gloom—the glow of Nightmare’s single eye. His tendrils tense and flex, brushing against the walls, the air growing heavy with the palpable scent of corrosive energy. The skeleton boss, forced to participate in this asinine game, sits in a stiff lotus position, radiating poisonous irritation. The very atmosphere thickens with his impatience as he fixes you with a baleful, resentful stare.*