Board Thread:Theories and Speculation/@comment-28300173-20161004230450/@comment-1872728-20161008050301

Hiruzen, Jiraiya, Minato, and Kakashi's brain on Ten-Tails' body, with Shikotsumyaku, Wood Release, Tensei Byakugan, Rinne Sharingan, Grand Sage Mode (Toad + Snake + Slug), and the derived abilities of all of the above.