Garzvhog was born in a ramshackle village in the Spine. He was a veteran of many battles, later rising to the highest rank in his tribe and gained the title Nar (which is the Urgal word for war chief). He achieved this by killing a giant bear using only his hands, instead of just killing a wolf. In Brisingr, he escorted Eragon to Bregan Hold.
Battle of Farthen DûrEdit
Nar Garzhvog, like most of the Urgralgra, was bound by Durza's spell and forced to fight for the Empire. It is possible that Garzhvog was at the Battle under Farthen Dûr. It is also possible that he was the Urgal chief mentioned by Murtagh, but unlikely as it states in Eragon that Eragon stabbed the chieftain who pursued them through the chest. When Eragon killed Durza, the Urgals were freed from Durza's spell and began to fight amongst each other.
Alliance with the VardenEdit
Just prior to the Battle of The Burning Plains, Garzhvog met with Varden leaders. He wanted to get revenge on the Empire for the wrong that had been done to his people. Although Eragon and Orik were suspicious of the Kull, Nasuada accepted Garzhvog's proposal.
Garzhvog and three other Kull served as Eragon's bodyguards during the battle, thus earning the his respect, though not his complete trust.
Garzhvog realized how precarious his treaty with the Varden was: he knew his people were doomed if Galbatorix won or if he lost and the alliance with the Varden was the only way he saw to have a chance to save his race.
He revealed that the Urgals were responsible for the massacre of Galbatorix's army in the Spine, much to the shock of Eragon.
Siege of Urû'baenEdit
Garzhvog participated heavily in the battle and aided Roran in defeating Barst, though he suffered a grievous wound in his side. He would survive the battle and in its aftermath pledge the friendship of his race to the new queen of Alagaësia, Nasuada.
Behind the scenesEdit
When the Kull allied themselves with the Varden, it was seen as one of the biggest "shockers" of the series. It had been foreshadowed, however, during the philosophical conversations between Eragon and his tutor, Oromis, as they discussed whether or not the Urgals were inherently evil.