Shadow

Shadows are a form of lesser Daedra that serve Setsuna.

Shadows are mainly found in Setsuna's realm of Silence, but can spawn in Mundus. Seeing one means you are well on your way to insanity.

Origins
Shadows were created by Setsuna after she devoured Azura, Boethiah and Mephala. They serve her, and her alone. They cannot be summoned, even by other gods, and are the very epitome of nightmare and insanity.

Appearance and Behavior
Shadows can take on many different forms, and can change shape like any shadow. They tend to be very aggressive, and behave similar to your standard horror monsters, skulking at a distance, causing you to question your sanity, and as soon as you look away, they move closer. They can act in groups, or alone, but victims will usually find themselves pursued by multiple of them. Running will not help, nor will hiding. There is no way to beat them, as they do not die. The only way to be rid of these horrid creatures, is to kneel before Setsuna, and become her plaything.

Shadows can move when seen, but will likely move in place. They prefer to only decrease distance when unseen. If one Shadow is kept within sight for too long, another will likely spawn near the victim, ensuring that there is no escape.

Spawning on Mundus
There are many ways a Shadow can spawn, most notably from the shadows of living creatures. If a person should attempt to challenge Setsuna, they may wish to keep an eye on their own shadow, lest it should become a Shadow. Shadows cannot spawn from the shadows of living creatures, if said living creature can see their own shadow. This only counts for physical sight, and so if the creature can see their shadow via magical or spiritual means, it can still become a Shadow.

Traits and Powers
Though the physical threat of Shadows is very real, as they will physically harm if they come close enough, they are more of a threat to the mind than they are to the body. Even seeing one is not only considered an ill omen, but also means that you will lose whatever sanity you have, for better or worse. Shadows are parasites of sanity, and you will literally lose sanity for every second you sense one, whether you see it, hear it or smell it. Prolonged exposure to Shadows brings lunacy, and will likely cause you to kneel before Setsuna's power, unwillingly becoming hers. When Shadows stalk you, you will kneel before Setsuna, as the only way to be rid of them, is to kneel, and if driven completely insane by them, you will kneel.