User blog comment:A, Mori/Corruption/@comment-1713909-20141210190916

Not entirely sure about how the whole "Soul possessing the shadows" work, especially given how Zalgo itself works, but eh.

This does remind me of a few ideas I had for Shadow Lud in regards to Cut, though. You could make the argument that the shadow's appearance also comes from a subconscious fear of Cut itself, which manifests as the creature. The caved in skull with the red light shining out of it could also be an indicator of a fear of something dangerous that is within him.

Also, I just noticed there are no arts/pics for any of the shadows save for Rev and Luna. Might need to make a reference page for their designs or something later.