Starlight Citadel was a space created by Ultimate Merlin, located in the cracks between the High Dimensions of the Multiverse for the Captain Britain Corps to use.
When they dealt with the Inheritors last time, Captain Britain Spider-Man had come from there. Su Ming had also learned some information from him.
Ultimate Merlin's original intention in establishing that order of Knights had been good. He wanted the Captain Britains of countless Parallel Worlds to pool their wisdom and strength against outside threats such as the Beyonders, Constructors, Celestials, Old Ones, and more.
But after building the house and setting up the framework, he had slipped off to explore the Omniverse himself, leaving the castle and its forces in the care of Queen Sat-Yr-9 and his daughter, Roma.
Roma was not exactly innocent and naive, but she at least suffered from a severe savior complex. Her codename was "The Mother," and there was something wrong with her logic.
Although she was Merlin's daughter and far stronger than the queen, Sat-Yr-9 was the one who called the shots in Starlight Citadel, simply because the queen wanted to be in charge.
That woman was indeed an iron lady with a hard hand, but she quickly turned Starlight Citadel into something resembling the United Kingdom Congress.
The Captain Britains spent every day arguing and voting over issues within the Omniverse. Multiversal-level problems were trivial to them, yet they lacked the ability to handle truly major matters.
If a Single Universe ran into trouble, the Heroes on that Earth could choose to seek help from the Knights, but the process alone would take several months.
First, they had to submit a written application. It would pass through layers of approval from several captains in charge. Only after the queen approved it could it be brought