Ogres

These would be large mobs, about the size of an iron golem. Most would roam and be hostile to everything, but some would live together in camps with crude wood houses. If you gave an iron ingot or something to one of them, the whole tribe would become friendly to you, and will protect you from mobs as long as you are in the village. If you hit any of them then they will all become hostile and try to kill you. If killed they drop Ogre Skin which can be crafted into armor that is as strong as leather, but allows you to sneak past hostile Ogres without being noticed. This would add a sense of magic to the game.