Now before people claim the mighty Sauron, Saruman and/or Aragorn. You must take into account that no one is invincible. Sure we can understand that if Sauron walks up to anyone he is pretty much going to dominate them, but in no way can he siege Minas Tirith on his own. All Characters are killable by military and other Characters. Keep in mind that any player can kill any other player's character, but it is highly unlikely that the Witch King will be killed by Frodo Baggins.
We also expect certain character/s to be more prone to war than others. Such as Frodo Baggins will never march to war, but will defend a land if he is there; if he has to or feels it necessary. More than likely however, he will flee. On that note; Sauron or the Witch King would be the first to invade and attack others. Same goes for Rohan, though open war is upon Middle-Earth so it is expected out of them. Just keep this in mind when you are roleplaying as them.
