User blog comment:BeholderofStuff/AN ANNOUNCEMENT ON GHOSTS/WRAITHS/@comment-366087-20160523032841/@comment-366087-20160523052047

Personally? It's very simple. ALL that is needed is something like:
 * Spirits, Ghosts, Wraiths, and anything which can walk through walls are Noncorporeal. Usually Dead.
 * Example Character A
 * Example Character B

KISS. There really is not much more to be said.