The Tieffelins

Tieflings were human-based planetouched, native outsiders that were infused with the touch of the fiendish planes, most often through descent from fiends—demons, Yugoloths, devils, evil deities, and others who had bred with humans. Tieflings were known for their cunning and personal allure, which made them excellent deceivers as well as inspiring leaders when prejudices were laid aside.

Although their evil ancestors could be many generations removed, the taint lingered. Unlike half-fiends, tieflings were not predisposed to evil alignments and varied in alignment nearly as widely as full humans, though tieflings were certainly devious.The celestial counterparts of tieflings were called aasimar.

While some looked like normal humans, most retained physical characteristics derived from their ancestor, with the most common such features being horns, prehensile tails, and pointed teeth. Some tieflings also had eyes that were solid orbs of black, red, white, silver, or gold, while others had eyes more similar to those of humans. Other, more unusual characteristics included a sulfurous odor, cloven feet, or a general aura of discomfort they left on others.

The physical appearance of a tiefling often depended on the exact ancestry that spawned it, a bloodline that might have remained dormant for generations.

They tend to stay in the depth of the desert, were no one can come to them. Betrayed more than once by the other races, they make no exception when it come to not trust other species.