The Gnarlpine are a corrupted furbolg tribe that dwells atop the great world tree of Teldrassil. Though originally peaceful, the insidious effects of Fel Moss have caused the Gnarlpine to go berserk and attack their their former allies, the night elves. As well as occupying Gnarlpine Hold and their other traditional villages in the south and west of Teldrassil, the Gnarlpine have also invaded Ban'ethil Barrow Den and Starbreeze Village, driving out or slaying the local inhabitants.
The most dangerous of these corrupted feral beasts include Ferocitas the Dream Eater, Ursal the Mauler and Uruson.