Mir - A long way...
A Justicar is the representative of the Yuan-Ti in every community. Depending on the size of the community, there could be any number of Justicars. In matters of law and punishment, they have the final say, and are backed up by the full force of the Tribe’s armies. They do not, however, have jurisdiction in internal civil matters, and do not (legally) have say in the politics of the settlements.
Often called a “skin-changer” or “fork” by some, as they are seen as traitors to their own cause.