The summoner from under the warrior's guild, and the dragon riders IIRC, survive when you sleep (most creatures that yu cast Aura of Command on will die). Someone in the old forum had a topic called 'my boss collection' where they listed some similar creatures. They also had a screenshot with the warrior's guild summoner following them; after coming in range of an enemy, there were a lot of summons quickly, pretty much filling their mini-map with green crosses.
