Each title has a Rank, which determines its place in the feudal pecking order. Rank primarily governs how holders of that title can vassalize or become vassals of other characters. For example, a King can never be a Duke's vassal, and a King's vassals will all be Dukes, Counts, or Barons (a player with the same primary title rank as you cannot be your vassal, by definition). Title Rank also determines what bonuses it grants to players who hold that title. The lowest "playable" title is Count. Barons can never become independent or playable.