Board Thread:Theories and Speculation/@comment-28300173-20161004230450/@comment-28668535-20161004232009

Hashirama Senju, removing Madara's eyes after defeating him and implanting the Eternal Mangekyo Sharingan into himself, which then evolves into the Rinnegan due to the mixture of Uchiha and Senju DNA; then utilizing his mastery of controlling Tailed Beasts to unite them, he creates then Ten-Tails and becomes the jinchuriki of it.

Then, being immortal due to the Ten Tails power, he survives until the emergence of Hamura Otsutsuki and eventually removes one of his Tenseigan. Now he has Ten-Tails power, the inner power of Asura, a Rinnegan, a Tenseigan, senjutsu prowess, and the overall bad-ass talent and skill of being Hashirama Senju.

I can't think of a single character that could combat OP Hashirama Senju like this. Even Naruto and Sasuke in their final forms would fail in trying to fight this.