Tieflings are human-based outsiders created most often through descent from fiends—demons, devils, evil deities, and others who had bred with humans or bestowed unspeakable curses upon kingdoms of old. Tieflings are known for their cunning and personal allure, which made them excellent deceivers as well as inspiring leaders when prejudices are laid aside… though this has only happened twice since the First Era.

Although their evil ancestors could be many generations removed, their taint lingers. Tieflings to have an unsettling air about them, and most people are uncomfortable around them, whether they were aware of the tiefling’s unsavory ancestry or not. While some looked like normal humans, most retain physical characteristics derived from their ancestor, with the most common such features being horns, prehensile tails, and pointed teeth. Some tieflings also have eyes that are solid orbs of black, red, white, silver, or gold. Other, more unusual characteristics included a sulfurous odor, cloven feet, or a general aura of discomfort they left on others.

Tieflings, if they commune with the rest of the peoples of Valeria, hide their features so that they are not seen as their true selves among the common folk. A tiefling in the open would be labelled a demon and either chased away, killed, or the people would run and hide. They have no place in this plane, and therefore often lead a life of crime or have an alternate identity. Tiflings will often remain hooded, or have helms fashioned so that their horns appear to be features of the helm as opposed to parts of their true selves.