Changelings

Approximately 6000 years ago the first community of changelings was discoveredby agents of The Watchers Over the Vault in a burrough of a large city, while small, there were about 75 members including children and elderly who were very cagey about where they'd come from. Eventually, after some measure of trust had been earned, it was revealed that the changelings, as they referred to themselves, had come from the ranks of doppelgangers assassins when it was determined they weren't suited to that skill set. Originally about 30 individuals an additional 20 had joined them a few years later and at that point it was decided not to take in anymore adults to keep from growing too large too quickly. Since then their new members had all come from the birth of children.

After that, attentive observation uncovered 3 additional communities of similar size and age within the same city over the next few decades. From that point forward small communities of 50-80 individuals began to pop-up every twenty years or so embedded within large and industrious cities, this trend continued for around 200 years at which point the Watchers observed that new communities and changelings identified where populated entirely by changelings born in known communities who had relocated to keep from becoming too obvious where they were before. Since that times changelings have done well, while not exactly thriving and have become one of the major civilized races, if not among the most respected.