Tiefling

Those who bear the mark of Ruin are first met with mistrust, then curiosity—and in the more rural areas of Drahman, fear. Countless scholars have delved through thousands of years of Drahman history in search of the origin of tieflings, to little avail. The most complete extant answer is that, during the Age of Myth, a cabal of power-hungry warlocks consorted with dark entities, and many these unions resulted in children neither wholly human nor fiend. These children denied their ash-blackened fate and traveled across the world in hopes of defining themselves through their deeds, not their nature. The first tieflings to walk on Drahman sailed in during the Age of Arcanum, fleeing religious zealots who believed their very existence was an abomination. Most tieflings in Drahman refused to fight during the War of Divinity—when your kind have seen so much evil from all kinds of people and even the gods, a certain nihilism inevitably takes hold.
  In the centuries after the War of Divinity, tieflings who had grown weary of gods and demons rejoiced; in a way, the withdrawal of the gods and halt to their constant meddling in the affairs of people had freed them from their cursed past. When Amon Drossei and his sons conquered the first free lands of Westmarch, the tieflings of the continent rose in near unanimous rebellion against the tyrant. They had seen his kind before, they knew his methods, and they knew others would suffer like they once did.
The fear and apprehension that surrounded tieflings diminished some when the other people of Drahman fought alongside them, but the tension never fully faded. As such, most tieflings stick to the more studied and diverse cities like Ivorell and XXXX. Corleone and XXXX are not devoid of tieflings, and many there gleefully embrace their fiendish ancestry, finding their calling in foul deeds and shady business. The dwarves of Everpeak generally keep tieflings at arm’s length, while the denizens of Verdant Citadel rarely leave a tiefling without watchful guard.