Qilak

Demonym: QilakanThese beings, humanoid creatures with fiend and demon bloodlines from millennia ago, have been inhabitants of Sefyll since the beginning. The Eladrin and the Gods who formed this world weren't alone in their desire to inhabit the land. Fiends and demons broke loose from the divine bonds which held them captive and arrived on Sefyll to entice the inhabitants as followers. In many cases, fiend and demon blood became mixed with human blood. These evil creatures were forced away by the Gods, but their print had already been left upon the land: Tieflings were born.
The Tieflings that inhabited Tyrael were fought fiercely by the High Elves of Sylenor, such that they were pushed past the North Marshlands and left to settle the North Horn of Tyrael. Qilak is the nation that they formed, with a King, or Mahal, and nobles. The color of the skin of the Tieflings of Qilak range from shades of gray to deep purples. Not much is known of them, but it is an agricultural society and they generally make a living as farmers of peculiar crops and varying livestock. The Citadel of Qilak is Arxya.