Free League
From Multiversal Omnipedia
The Free League was one of the former 15 official factions in Sigil. Also known as the Indeps, they believe in freedom and independence for all individual beings- in fact, they don't even consider themselves a faction, because that would require some members to tell others what to do, and they won't have it. In short, they are an informal league of free-thinking individuals.
Following the Faction War, the Free League (and every other faction) was banished from Sigil by the Lady of Pain.