Nobody knows where Burth comes from, and he clearly does not want to talk about it. He is actually a closed book on many subjects, and more a do-er than a talker. But it is clear there is one thing he values: loyalty. If he considers you a friend, and feels he can count on you, then rest assured that he will go through fire to help you in times of trouble.
Taking hits for himself or others is no problem for this bear of a man. Hurting evil is harder for him to do, but his support will be helpful for all.