I am positive it is Tobi
Tobi because nobody could defeat him. But i think if naruto fight Tobi Tobi will get kill
Madara is not Tobi.
Tobi :D
No it is not. If you are referring to the episode where Tobi was with Didara in the dango shop when he said "Ichibi, Nibi, Tobi!" then no it was just Tobi being stupid.
No, Tobi does not kill Tsunade.
Tobi was trained by Madara
naruto 99
It is Uchiha, not uchia. Apparently, no Madara is not Tobi, Tobi just took Madara's name.
Tobi is actually Uchiha Madara.
Tobi wields the Makengo Sharingan.
no he did not. Tobi is actually madara uchiha.