I'll get this clear right from the get go. This is not about the game, this is just to clear up one last thing about one of the teasers. Okay, as you guys may know, in FNAF2, there's a new animatronic that's resembles a marionette figure. Believe it or not, this was actually hinted at in the teaser that is currently up on Scott's website. This is the picture: Although it appears to be completely black, you can see something if you brighten it a lot... So, yeah. The marionette was hinted at in the teasers, it just wasn't very obvious :p
The marionette is the new foxy. It comes out and you cant stop it if you dont act fast enough. (Using the music box thing)