Tiefling

Because they are descended from evil outsiders, those who know their ancestry immediately consider most tieflings evil and untrustworthy. Not all tieflings are evil or untrustworthy, but enough are that the prejudice tends to cling. Some tieflings have a minor physical trait suggesting their heritage, such as pointed teeth, red eyes, small horns, the odor of brimstone, cloven feet, or just an unnatural aura of wrongness. Those descended from an infernal minion often carry a birthmark of the deity's holy symbol or another trait related to that evil faith.