Star Wars Episode VII The Dark Lord

As The Phantom Menace and A New Hope each referred to a character in the film, Senator Palpatine and Luke Skywalker, the title of Episode VII may refer to another. I'm hoping for Darth Plagueis who was discussed in Revenge of the Sith and was formerly Palpatine's master. Darth Plagueis the Wise used the powers of the Dark Side to try and cheat death. I hope he succeeded and returns as the big bad of the new trilogy.