Read more about Captain Britain Corps at: Wikipedia

Official Site: Marvel Entertainment

In Marvel Comics, the Captain Britain Corps is a league of super-heroes all known as, or appear as an alternative version of, Captain Britain. They are all essentially the same hero except they each come from an alternative reality.

Founded by Merlyn, his daughter Roma and Sir James Braddock, the Corps' main duty was to guard the Multiverse. Each member protected his or her reality based on their dimensional equivalent of Britain, and was powered by the friction between dimensions.

Merlyn and Roma arranged for each chosen member of the Corps to gain superpowers, using any means, disguise or otherwise, possible.

When the insane mutant Wanda Maximoff altered reality in House of M, another wave of destruction tore through Otherworld. Roma and Saturnyne, in an effort to save the omniverse, give Brian 48 hours to fix the tear in reality, or they will erase his Earth completely. With the sacrifice of Meggan, the heroes are able to seal the tear.

Captain Britain Corps has not been a contender in any CBUB matches.