Hero

A hero is a new kind of computer-controlled henchman introduced in the Guild Wars Nightfall campaign. Unlike the henchmen of Prophecies or Factions, a hero is fully customizable by the player. This includes: A player can have at most three heroes under his control. It is not known at this time if the three hero limit is per character or per account.
 * The hero's name, appearance and profession
 * The hero's equipment and armor
 * The hero's skills

In addition to the customizability, players will be able to command their heroes to "attack", "defend", "stay back", and so forth. A player may even take his heroes with him to PvP in a new form of competitive mission called Hero versus Hero.