Orphaned by the plague at a very young age, Ung was taking in by the Order of Mordheim, to be trained as one of their elite.
Although Ung showed great promise with all things melee and combat, his somewhat "diminished" brain capacity did not allow him grasp the finer points of the Order, and as such he was "released" from their services [thats is, after a midnight assasination attempt on his life (the Order do not just let you leave!) he fled to the surrounding hills with only that which he could carry on his back].
Having no coin and no direction, he soon found himself living the life of a mercenary, tasting all the fruits (lager, ladies and leaf) that had been forbidden to him within the order. Indeed life was good!
A trustworthy, hearty and well liked sell sword, what he lacks in brains he more than makes up for with courage and his strong right arm!