Tieflings, terror incarnate and boogeyman of the desert, is a morality story told to young children growing up.
“Don’t go out at night or a Tiefling will scale the wall and snatch you up”
The reality isn’t too far from the stories. Mysterious Tiefling tribes exist in the desert and are known to capture and eat travellers, or sacrifice them to an unknown being.
Few Tieflings have integrated into society and when they do, are persecuted or at least treated with suspicion.