The T'lan Ay were undead ancient ancestors of wolves who accompanied the T'lan Imass. They had once been mortal ay until the Imass had included them in the Ritual of Tellann, an act Pran Chole attributed to Imass selfishness. The T'lan Ay were twice the size of the plains wolves of the Burn's Sleep era, with comparatively disproportionate long legs and broad shoulders, short necks, and wide jaws. Some possessed grey, matted fur with black shoulders and thick silver tails with black tips. Others were the colour of powdered rotted wood with tan throats and bellies.