Tieflings

Tieflings are the product of relations between a Human, Elf, or Half-Elf and an imp. The imps exist to make mischief,  and their ability to appear human has resulted in the existence of Tieflings, often unbeknownst to the imp's victum. The offspring of Tieflings have about a 50/50 chance of being a tiefling themselves, otherwise inheriting the racial characteristics of the Tiefling parent's other half from them. This has resulted in in the race being somewhat established in Rehtara, though still considered rare and are often met with unpleasantries.