He is a member of the Wyrmcult, and usually hostile to players, unless you are disguised as a member of the cult. The Overseer Disguise does the trick, you can obtain it during the quest or after you have completed it.
He sells several run-of-the-mill general goods, but has two special items in his store:
- , a cloak providing +24 fire resistance, one of the cheapest decent fire resistance items.
- , which will transform you into a black dragonwhelp for a short time.