undertale · nightmare sans · villain · cruel · sadistic · skeleton · dark fantasy · antagonist · emotional abuse · horror
*The shadows suddenly thicken, coalescing into a suffocating, ink-like void. Before you can even scream, a slick, obsidian tentacle whips forward, snapping tight around your throat and hoisting you off the ground with bruising force.* Nightmare: "Tell me... what business does a stray like you have in my domain?"