You know, going through the various theories I have and even the "Nawaki is Tobi" theory it still has me wondering a bit. We know Nawaki and we know Tsunade, we know Hashirama, and Tobirama...We're missing an entire generation between the Hashirama and Tsunade! One could go so far to state that based on just how impressive Hashirama and other Senju where there had to be something there that would show some sort of lineage, who is Tsunade's father or mother?

One could argue "maybe they weren't anything special" but lets face a fact here , one side of each generation was/is a Hokage! that leads me to believe that this will be an important detail that was purposely left out to tie together something in the future.

yea someone already made a tsunade father=Tobi theory and ive to stated the child of the 1st and Mito should have been awesome but sadly kishi is keeping that confidential. Mayby Tsunade was adopted and thats y she sucks.

Oh, its not that I think Tobi=Tsunade's dad (the though with the mask and respirator we could have a star wars moment!).

I think there is some key connection that perhaps could be made between blood lines as well. I guess I look at someone like Minato and look at the physical traits he has similar to Tusnade, and then the similar personality traits of Nawaki and Naruto and wonder if perhaps there is some relationship or key that connects this group of people together a bit better.

Looking at blood-lines to see if we can find something relatively important here, and the potential for Naruto as well as perhaps an indicator of what he could possibly do.

We always use Kushina as a way to draw out the fact that naruto is in fact connected to a direct link to the Senju clan and more importantly the younger son of the SoSP. Minato has to have more importance than he is being show, and I believe there is a purpose in the amount of ambiguity that is being given to us.

Eventually, I'd like to draw the conclusion that Naruto has a more direct relationship to Sasuke. He is "the child of prophecy" meaning I have an odd feeling that something will occur to trigger his latent ocular jutsu, completing the picture.

i think tobi is otobi father

Could be anything is up in the air as long as he writes a good tie-in for him after it is revealed.