From the Privateer Press website:
Once a proud Tharn king, Ghetorix was bested in combat and captured by Kromac for defying Morvahna the Autumnblade. As penance for his defiance, Morvahna forced the warpwolf elixir upon the defeated king, transforming him into one of the fiercest warpwolves the Circle has ever known.
Ghetorix’s thirst for blood and hunger for violence is legendary. His howled battle cry sets his foes’ hair on end, breaking spirits even before his axe and teeth bite into flesh. Ghetorix’s bloodlust is slaked only when he stands knee-deep in the entrails of the fallen, his jaws dripping with gore.
The Ghetorix character warpwolf upgrade kit comes in a blister (PIP 72062). The Ghetorix character warpwolf upgrade kit is NOT a complete model. Players will need a Circle Orboros Feral/Pureblood/Stalker Warpwolf Kit (PIP 72057) in addition to this kit. A player may field one Ghetorix in a Circle Orboros army.
Again, Privateer Press knows awesome.