Adhene

The Adhene, often also called Denizens or Dark-Kin, are specific groups of fae who have opposed the Tuatha de Dannan and their progeny, the Kithain.

Nature
During the War of Trees, the Adhene were mostly allied with the Fomorians. When their masters were imprisoned, they were banshid within the Dreaming between the Silver Paths, unable to reach the Autumn World except some who didn't participated in the conflict.

During the Week of Nightmares, the spirit nukes of the Technocracy blasted the Nightmare trods into being which were used by the Adhene in order to escape their imprisonment.

The Denizens are not Changelings. When they come to the Autumn World they have no physical body and no Banality. They are able to possess human bodies through a variety of means, or go without a physical form, which accrues Banality faster but has its own advantages. Some Denizens employ an Art called The Autumn Way to better deal with the world of humanity.

Aria
Each Denizen has three "Aria", which determine which Legacy is dominant, what their current Tempers (Glamour and Willpower) are, determines much of their personality and even alters their fae mien to some extent. These three Aria can change at any time, and the Denizen's attitudes and demeanor along with them.