Mutant Castle is a fort populated by Super Mutants, nightkins, floaters, centaurs and Mutant hounds.
It's Located in former Indian Springs.
It was formerly an air force called Greech Air Force Base. After the Great War, the super mutant tribe No Name's Tribe started building a thick wall of concrete around the air force base, years of building and they finished the wall and started to build a city inside the concrete wall.
The New Unity Edit
As the mutants formed a life in Indian Springs, their leader, No Name or more known as Chief Nemo by the members of the tribe, decided to re-name the tribe from No Name's Tribe to The New Unity.
The Super Mutants prefers to call themselves The New Unity.