Remake so I don't Necro.

I apologize in advance if this didn't deserve its own thread but I do remember seeing in the rules for the "Request a Homebrew" thread that larger scale things should get their own threads and I believe what I'm requesting warrants that.

On to the actual topic; the other night I was skimming around TV tropes when I happened upon one of those non-serious pages where screwball theories and nonsense are discussed for certain series. This one in particular was for Friday the 13th and it had a concept that interested me greatly.

The article put forth a theory that Jason Voorhees was in fact a kind of restless spirt that created a physical body to interact with the world because he couldn't come to terms with his actual death.

So what I'm asking for here is a sort of "Physical ghost" template in which the ghost doesn't have an acting ethereal body but creates a controlled (or inhabited) physical shell.
And to clarify, I don't mean just a Ghost's Malevolence ability. I mean that a Ghost creates an actual body to use as a physical medium. (Though I guess I could just create a Soul-Locked entity.)