The children of many races are sometimes affected by the ancient and random magics hidden in pockets or released by circumstances. These children tend to take on particular characteristics, such as the ability to emulate almost anyone of similar mass. Unfortunately, such children often become 'blank slates' in their physical form – no noses, overly large eyes, no hair, and generally awkward appearances according to their native races.
Even for those dopplegangers that are accepted by their parents or communities, the temptation to cause mischief more often than not outstrips morals. Children and adolescents growing up with the ability to emulate even their own parents, siblings, authorities, and foreign races rarely do not abuse the ability.