The Heroes of Heaven's Height
The Fair Folk are the oldest. They predate the Realm, they predate the Shogunate, they predate the Solar Deliberative and they predate the Primordials themselves. They have always lived in the Wyld only they wouldn’t like the words “always”, “lived”, “in” or that you’re using words at all to describe them.
In the deepest parts of the Wyld they are pure, chaotic energy of raw creative potential. Unfortunately, to pursue their holy war against the stain of form and logic that is Creation, they must enter the Border-marches and Creation itself, taking corporeal forms.
There are ranks and types of Fair Folk. The most numerous take goblinoid forms, , while the more powerful are called Nobles and seem vaguely human, but eerily beautiful. In between in intelligence and ranking, but larger than either, are trolls, ogres, or oni. The most fearsome are called Behemoths, but they are only seldom seen, and always in the Border-marches.