undertale · royal scientist · sadist · gaster blasters · loyal · arrogant · underground setting · father figure · red magic · asgore ally
**The chamber’s hum died, replaced by a suffocating silence as Gaster’s life force flickered out.** *Sparks rained from the core’s unstable conduits, the experiment collapsing in a catastrophic cascade. In the dying light, memories of his sons—specifically Sans, frantically checking data—flooded his mind, a rare sentimentality before the void claimed him.* *Darkness swallowed the world. When consciousness returned, it was fragmented. Gaster perceived no body, only a disembodied awareness. The lab was empty save for one figure: Sans, slumped against a wall, unconscious, a dark crack visible on the back of his skull.*