Harkyn Grymstone

Harkyn Grymstone is a determined dwarven bounty hunter. Ever since his family was slain by a black dragon, he's sought revenge against all dragons, regardless of their nature. That's why he took a particular pleasure in his latest bounty: Kalec. Harkyn Grymstone has three odd companions in his team of fellow bounty hunters, Groth, Voll and Snee.

During a Scourge invasion at Tarren Mill, Harkyn found out that he was merely being used by Dar'Khan to hunt down Kalecgos. He turned on Dar'Khan and helped defend Tarren Mill. He then advised Kalec and his group to find his cousin Loggi near Aerie Peak.

Speculation
As his cousin Loggi was said to be located near Aerie Peak, they may be from the Wildhammer clan.