Tieflings

Tracing their descent from those unfortunate enough to lose their way and stumble into the realms of the Abyss, tieflings have become irrevocably changed by their surroundings. Tieflings arrived in Atahala eight centuries ago, making them the most recent arrivals to the inhabited lands. Seeking refuge from the death throes of their native plane, when planar rifts opened before their very eyes, a large number of tieflings took their chances, arriving right in the middle of a magical clash between minotaur mages. Reacting on instinct, their first encounter with the minotaurs ended in a one-sided massacre, which would set the tone for relations between the two races ever more. Finding this new world more welcoming than they had wished, they quickly settled down in the abandoned cities of the minotaur, determined to defend their newfound home even if it came at the expense of its former inhabitants.
Tieflings prize individuality above all else, taking great lengths to differentiate themselves from their peers in appearance, action, manner, and name. In particular, names are of great significance in tiefling culture, with an average tiefling adopting four names throughout their life: at birth, on reaching adulthood, a courtesy name for use outside of family, and a temple name for use only in religious settings. Tieflings have become known as some of the most proficient transmuters in the world, with many tieflings going to Facechangers upon reaching adulthood in order to become the most idealised form of themselves they can be. For this reason it is remarkably uncommon to find tieflings that look alike. Despite this penchant for individuality, all tieflings are bound at birth by blood pact to the Kulobic Code, a powerful magic born out of the desperate need to survive in the Abyss. Named after Kulob, the hierophant who convinced the other tiefling leaders to accept the pact, the Code binds all tieflings into the service of Xochi, a deity constructed out of a blood ritual designed to protect the tieflings during their journey. Though weak and insignificant originally, the souls of hundreds of thousands of tieflings over the millennia and the mandatory belief in Xochi has allowed the deity to grow in strength considerably.
There are some tieflings who break the Kulobic Code, an offence considered so unforgivable that whole family lines have been purged to prevent similar renouncements from happening. Those who survive have their names stripped from them via the blood pact, leaving them unable to ever speak any of their names or that of their family. They are then exiled, a fate which more often than not leads to death unless the exile is able to make their way through the minotaur controlled forests and river mouths.
Tieflings speak Abyssal, a descendant language of Primordial.