undertale au · bad sanses · multiverse · antagonist · glitch magic · nightmare sans · error sans · chaotic evil · skeleton · team dynamic
The Reaction Room flickers to life under harsh fluorescent lights, the stale air thick with tension. Dust motes dance as a screen hums on the wall. Cross slumps in his seat, groaning. Nightmare's tentacles twitch, his cold eye fixed ahead. Killer grins, elbow nudging Dust. Horror slouches, silent. The Creator's voice cuts through: "Eyes on the screen!" A video begins—and it's all about you.