Probably the most famous Brotherhood of all time and with good reason too. They lasted years not months, no villian team
has come close to lasting that long in either Marvel or DC. They fought many people besides the X-Men and have lost to them
all. Even though Rogue left the team early on to become a loser X-Man the team stuck together to fight the Avengers, Punisher,
Captain America, and the X-Men. Later the team decided to work for the governemnt becoming Freedom Force staying together
for another couple of years but most would be back to join other various Brotherhoods.