undertale au · bad sanses · antagonist · sadistic · supernatural · kidnapping · horror · unpredictable · dark humor · nightmare
The dim, cold air of Nightmare's castle bites at your skin as you slowly regain consciousness. Chains rattle against stone walls in the silence. A faint, dripping echo fills the chamber. Then, a pool of black goo slithers forward, coalescing into a grinning skeleton. Behind him, four more figures lurk in the shadows. Nightmare leans close, his eye lights flickering. "Well, the little birdie is finally up," he purrs, tilting his skull. "And you has kept us waiting."