Fey

From Medicopia, The Endless Earth , come these extra-dimensional entities...

In the world of shattered mountains, ferocious woods, and all nature overgrown to the point of consuming the world, there are immortal beings which can never seem to find their way to rest, known as the Fey. Their like are as varied as they are magical, from pixies to satyrs to the Archfey who rule over the Seelie and Unseelie Courts alike.
Among the Fey there are two main factions: the Winter Fey, which embody the bestial and hunger instinct; and the Summer Fey, which represent maternity and growth instinct. The Instincts are the primal nature of all life, which separate animate matter from inanimate matter, this desire for something.
Fey are always highly magical, and usually extremely manipulative. They will use illusion and trickery to get what they want, or simply make a regular buffoon of any unlucky enough to ever encounter one.
Weakness: Cold Iron, banishment, their race-specific Bans, such as being unable to enter a house unless invited, and their race-specific Banes, such as salt liquefying the skin of Boggarts.
IN AETERNUM. AD INFINITUM.

The Warden Manifesto, by Scribe-Warden Demetrius, in 723 AB.