Tiefling
From Ardrana
Of all the plane-touched, none precipitate as much fascination - or as much fear - as tieflings. Whereas aasimar are obviously touched by a celestial spark, and genasi have the potency of the elements running through their veins, tieflings are enshrouded with the mysteries of an unnamed heritage.
Obviously Human and “something-else” crossbreeds, the “something else” in the tieflings’ case is usually assumed to be lower-planar. That stigma follows all tieflings through their lives. Loners by nature, they make their paths out of necessity; no tiefling culture exists to aid the outcasts, since no two tieflings are alike. As distinctive from humans as they are from each other, tieflings tend to be wary and distrustful due to the reactions they come to expect from others. Tieflings take care of themselves, for they lean early that no one will take care of them.
But rather than withdraw into individual hermitages tieflings challenge the multiverse with everything in their independent spirits. Determined to create their own fates, they dare things others might not even dream of and defy any thing that stands in their way.
Note: Tieflings originally appeared in this form in the Planewalker's Handbook for the AD&D game from TSR. Their use here is for the purposes of providing context for the campaign only.