Haha...hmm....If I could create any ghost pokemon what would I call it....oh lordy you do not want me to come up with a ghost pokemon, it'd end up being some sort of Eldritch abomination.
But, if you insist I shall take you into a brief trip of my insane mind. But I digress, naming something isn't my strong suit, so these names may not be any good.
"Umbriel" (maybe better for a Ghost/Dark type)
Meh, thats the only one I can come up with right now. Not very creative is it? xD