Dorrin was a dwarven ranger amidst the peaks of the Icefinger Mountains, far to the north, until he was captured by Zhengisi slavers and put to work forging parts for their Doomguard. His time in the sweaty slave pens, hammering out the armour of the Zhengisi constructs, has given him an abiding knowledge and hatred of constructs.
After Garrett stumbled onto the secret forges of Zengis, he freed Dorrin. In return, the dwarf foolishly swore to accompany him until he had found Halaster in the Undermountain. Despite continually regretting this oath, Dorrin still accompanies the Tiefling in his various missions, and even death has not broken his stern resolve.
As dour and sarcastic as any Dwarf, Dorrin is also good-humoured and always ready to lead parties into the wilds. He fights with a pair of outsized axes, and occasionally rides his faithful bear Mawg into battle.