Before the Books
Vyrrwolves were mentioned to have appeared in dire wolf society in the past which may have also been the time of the legends of Ga'Hoole when nachtmagen ran rampant and hagsfiends were present as well.
The young king Coryn and the band left the Great Ga'Hoole Tree to wander the Southern Kingdoms to see if any traces of nachtmagen were to be found (especially ones concerning Coryn's mother, Nyra). After receiving whispers from Rabbit, the web-reader rabbit, his search led him to Beyond the Beyond. There the owls met with the dire wolves Hamish, Gyllbane and Cody and told them the purpose of their mission. When they recounted the legends and the powers of hagsfiends, the wolves became afraid and revealed their knowledge concerning Vyrrwolves and their similarities to hagsfiends. They also made known that Dunleavy MacHeath had become a vyrrwolf and had taken most of the MacHeath Clan to a foul tunnel known as the Tunnel of Despair. Remembering the whispers Rabbit gave, the owls determined that Nyra was in the tunnel seeking to revive nachtmagen and had struck up an alliance with the corrupted MacHeath Clan. Coryn, the Band and dire wolf reinforcements assembled for an attack and fought the remnants of the Pure Ones and the Vyrrwolves. At the battle's conclusion, all of the Vyrrwolves were dead.
- Dunleavy B. MacHeath
Can use fyngrot, like hagsfiends.