So I made space in the Fae ancestries the same way I did the Doomed. (Moved the lycanthrope people: The Marked as a new name for the Beastkin versatile heritage) With this new space I wanted a third people to compliment my insect folk and plant folk, (Arthr and Verdant, respectively) and I settled on a shapechanger people called The Umbra.
Born of the invasion of The Fae, when the light of The Sun hit them, it caused there to simply be a second Fae. A shadow version of the emperor it came from, and in the beginning of the invasion the Umbra were simply part of it. Doing as the Fae willed: desiring life on Gaia just as their masters.
Eventually the invasion was finished and The Fae colonized Gaia with small settlements of their influence, and The Umbra learned to adapt. Developing highly secret magics of transformation, all Umbra possess two forms: their original shadow form, and another form- typically, but not always a hominid- that is cared for just as deeply and lives an entire life outside of the Fae community.
I'll surely have more on The Umbra, soon! Possibly even art! I was thinking some wispy, feminine shadow shape, or like a darkness cast over a nondescript, antlered person, or a mass of brambles in the darkness, with only a hint of recognition peering out from it.
Let me know what the original form of your Umbra character looks like! I think I'll be doing some art of these guys. I like that they bring a lot of Fae feel to my fae folk, a dark Fae feel that is necessary.