I know there's probably a dozen threads I could put this in, but there may soon be more so I'm going to post it seperatly.


Many people think that when Aeris appears in the church for a second or so it's supposed to be a ghost.


That is incorrect. The "Ghost" appears before her death, infact the earliest you can see it is shortly after you first get her in your team.

So basically, I have not idea what "it" is, but it isn't a ghost.