Nar Tulkhqa was an Urgal war chief of great renown. He had been captured once by the humans and had a great deal of experience fighting them.
He would ultimately be responsible for the brutal massacre of half of Galbatorix's army in the Spine, or as the Urgals would call it, Stavarosk. He lured the Imperial Army into a tight passage deep within the mountains, where they would be systematically surrounded and slaughtered by the Urgals and their Rams.
Stavarosk became a legendary tale for the Urgals, though few non-urgals apart from Angela, who seemed to know much of the battle.