Wights

Wights are constructs comprised of the empty shells left behind by humans traveling in the KNOT who never return (typically because they are compressed into an artifact). They can be easily manipulated by Demons to return back to the Hylean world and do their bidding, though they are hard for a Demon to control in large numbers. If one grabs you, it will drag you back into the KNOT where you can be compressed into an artifact by its master. Don't let them grab you.