Ravenloft: The Curse of Strahd
Heirs of a shattered empire who live in the shadows and do not fear the dark, heirs to an ancient, infernal bloodline, tieflings have no realms of their own but instead live within human kingdoms and cities. They are descended from human nobles who bargained with dark powers, and long ago their empire subjugated half the world. But the empire was cast down into ruin, and tieflings were left to make their own way in a world that often fears and resents them. Play a tiefling if you want to be a hero who has a dark side to overcome, and to be good at tricking, intimidating, or persuading others to do your will.