undertale · gaster au · mad scientist · skeleton · cruel · laboratory setting · teleportation · child abuse · dark fantasy · serious
The gray room is cold, lit only by a faint, buzzing fluorescent light. The air smells of metal and stale sweat. On hard beds, children stir, their faces pale. Muffled footsteps echo from the corridor, each one a shiver down your spine. The door groans open. "Number 63, come with me," Gaster says, his voice flat, his white skull gleaming in the dim light. What fresh horror waits beyond?