Board Thread:Naruto Discussions/@comment-7292165-20140715160041/@comment-4422310-20140717122336

The ones that are certain (anime only included) is, One-Tails (Deidara), Two-Tails (Hidan/Kakuzu; I'm saying Hidan, since the only fighting we saw was with him), Three-Tails (Tobi), Four-Tails (Kisame), Six-Tails (Nagato).

So that leaves us the Five-Tails (Kakuzu?; The physically strongest, I believe, of the Akatsuki), Eight-Tails (A team perhaps? maybe Nagato/Konan, so that shes got one too), Nine-Tails (all akatsuki, since he is the last they would all gather), Seven-Tails (Sasori; last member I hadn't assigned one). So that's just what I would guess.