It is a known fact that some Awakened become embodiments/empowered by concepts and archetypes (such as The Fool) yet even amongst those there are others who stand above and beyond them. Each Living Avatar is unique to each specific Archetype: only one can exist at a time. A Living Avatar presumably began its existence long ago when possibly someone Awakened and become an archetype. However, upon its death, so great was its power that the awakened power remained in the world as a spirit. Now this spirit seek a host who can embody its concept and fuse with it. Each successive host add to its power and personality.
Of all the supernatural humans they are arguably amongst those at the highest risk of being consumed by their own nature and Impulse.