Earthbound

While the Fallen still bear some resemblance to humanity, the Earthbound are utter monstrosities. Instead of inhabiting human hosts, they reside in inanimate objects either because they are too powerful for a human body to endure their presence, because they were summoned and bound into such an object, or because there simply was no suitable new human host around when they lost their old hosts.

The object containing the Earthbound's essence is called its reliquary. Reliquaries can channel and contain vast amounts of energy, and are far superior to human hosts in terms of raw power (as an example, no Fallen can affect an area with a radius of more than a few miles with their Lore, but some Earthbound can potentially affect the entire planet at once). Unfortunately, having a body that can't move, has only a dim perception of its surroundings, and is completely without sensory input besides sight and sound isn't that much of an improvement compared to the Abyss. A reliquary's essential blank-slate state and lack of a moral compass furthermore provides no relief from the millennia-old wrath and madness of the Abyss, and as a result the Earthbound degenerate further and further as time wears on, unable to escape their own Torment.

Source:
 * Demon: The Earthbound