Diablo III The Witch Doctor is a new character reminiscent of the Diablo II Necromancer The Barbarians will have a variety of revamped skills at their disposal based on the use of their incredible physical prowess. 1-on-1 dueling system coming into play. Five new character classes, including the otherworldly Witch Doctor, or with re-imagined warriors from Diablo's past, like the powerful Barbarian Experience a new approach to in-game health as the previous reliance on mana and potions is appended by resource types unique to each class, as well as health globes In single player quests utilize up to three AI followers, from three different classes who can be equiped with basic items and leveled up The new Rune System in which skills and abilities are now automatically unlocked as you level