Fey (Fae)
A diverse, difficult-to-characterize category of creatures that often hails from a hidden or near-parallel world(s) to the "primary" plane of your setting, and/or has strong associations with archetypal or natural forces like seasons, celestial bodies, predator and prey, and more, but usually do not fit into the realm of deific pantheons. Fae range in form and temperament from humanlike to utterly alien, and in danger level from harmless to near-godlike. Often the more powerful a fae is, the more it is bound to immutable rules tied to its nature--though they will rarely disclose what those are.