Vipul

Hey guys. So i've been brainstorming for a few days now but can't come up with a nice word for a ghost. I'm writing a play and there is a ghost involved (a guy who died tragically and roams around in his soul form, you get the jist). So this guy is called ghost by another person ("You're a Ghost") to which he replies, "I like to call myself XXXX"

I need the XXXX. This word should be more like a job title, a definition of what he his, but not ghost, soul. Use words like ethereal, reincarnation, realm stuck, whatever. Be cool, be creative, don't get limited by any realm of words, (pun intended (; )

Help me out guys please. This play is stuck on a word :p