C'Thraxxi are the most fearsome of the Old Gods' forces, a type of n'raqi that were far larger and more resilient. They were immensely powerful and intelligent, and their dark powers were capable of driving even titan-forged warriors mad. One C'Thraxxi in particular—Zakazj—was entombed under Tirisfal Glades. Little else is known about it beyond it being a monstrosity and somehow related to the losing of Stromkar, the Warbreaker, greatsword of King Thoradin of Arathor.