Okay, let me just put an end to this right here and now. All final bosses were chosen at random. I'm not going to list ten thousand bosses just to make sure every person who I have no idea of beforehand that plays this would have their favorites. I kept the list short so that this wouldn't be one of those games that runs for like a year and a half before getting to the half-way point. If you don't like the list, make your own or wait until this game is over where the top four villians will be paired against a new list of villians.
End of discussion.