He staffs the tasting counter at the front of the meadery, and gives glowing endorsements of the mead and Maven Black-Briar's business practices under penalty of dismissal (and possibly execution). After work, he returns to Haelga's Bunkhouse, where he eats and sleeps.
He may also send hired thugs after the Dragonborn if Indaryn is killed.
- Ungrien has a Speech leveling glitch. The Dragonborn can repeatedly persuade Ungrien to tell the truth about Maven Black-Briar, and increase Speech. This works all the way up to 100. Confirmed on all platforms. Persuasion is only possible if the Dragonborn's Speech is a minimum of 25. If this is not the case, the gold option can be used to raise it to 25, and then the gold can be pickpocketed back, saving before attempting this is suggested. However, this exploit has been fixed as of version 1.9.