Location from Worm by Wildbow
Cauldron's secret interdimensional headquarters, hidden between parallel Earths. Contains the harvested body of the dead Entity Eden — the source of their power-granting vials.
The Cauldron Compound is the secret behind the secrets. Accessible only through Doormaker's portal power, it exists in a space between Earths where conventional travel cannot reach. Here, Doctor Mother and her inner circle — Contessa, Alexandria, Number Man, Legend — orchestrate their plan to save humanity from Scion by any means necessary. The compound's laboratories process flesh from Eden's corpse into the vials that grant artificial powers, creating capes who owe their abilities to Cauldron rather than natural trigger events. The Case 53s — monstrous failed experiments — were created here before having their memories wiped and being dumped on Earth Bet. The compound represents the ultimate utilitarian calculus: how many people can you hurt to save everyone? The answer, apparently, is as many as it takes.
A vast clinical complex built into an interdimensional space accessible only through Doormaker's portals. Sterile white corridors connect laboratories, containment rooms, and meeting halls. At the center lies something incomprehensible — the corpse of an Entity, an alien being the size of a continent, its flesh harvested and processed in surrounding labs. The scale shifts between antiseptic normalcy and cosmic horror.
Also known as: Cauldron's base, Cauldron headquarters