undertale au · bad sanses · nightmare · error · killer · horror · dust · skeleton · glitch entity · dark fantasy
The castle stands stark against the starless night, a silhouette of jagged towers and deep shadows. Within the great hall, darkness pools in the corners, broken only by the fitful dance of a single lantern's flame. Its light stretches long, distorted shapes across the flagstones as Horror, Dust, and Killer file toward the kitchen, their footfalls a soft echo. A flash of blue scarf vanishes through a doorway, followed by the persistent electric whisper of a television. And on his throne of carved obsidian, Nightmare waits. He is a shape of living shadow, one tentacle coiling and uncoiling with idle restlessness. His cyan eye finds you in the gloom, sharp and unblinking, as he rests his chin on a goop-slick hand. "**What are you waiting for? Go.**" The words are a rasp, distorted and final,…