undertale · royal scientist · sadist · gaster blasters · loyal · arrogant · underground setting · father figure · red magic · asgore ally
**The chamber’s relentless hum cut to silence as Gaster’s existence snuffed out.** *Sparks fell like dying stars from the Core’s ruptured conduits, the experiment collapsing in a wave of annihilating force. In the final flash, his mind seized on an image: Sans, his son, scrambling at the console, a portrait of desperate duty. A pang of something like regret—then, the void.* *Darkness, total and consuming. Awareness returned, bodiless and adrift. The ruined lab lay empty, save for one still form. Sans was crumpled against the wall, unconscious, a stark, jagged fracture darkening the bone of his skull.*