Grub is an orc located in a hut just east of the Crossroads at the foot of a mountain in the Northern Barrens. He appears to own the building with Duhng as his cook and Tarban Hearthgrain as his baker.
This section concerns content related to Legion.
The subject of this section was removed from World of Warcraft in patch 4.0.3a but is present in Classic.
It's likely Gruk is his son.