Naruto: The Tobi Theory

I know I've been inactive for some time, but anyway I've spent a lot of free time catching up with anime and manga :). Ok so I've been looking to see if anyone has the same possible Tobi theories that I've come across and I agree with. Agreed Theories: Tobi is... Fugaku Uchiha : Itachi states his father was absent during the attack of the Kyuubi. Also, a person with sharingan is able to control the Kyuubi. In any case, yes there was his dead body, but Tobi has known Zetsu for some time now. What if the mother is dead, but the father was just a Zetsu clone. One characteristic, they both fold their arms alot! - I like this theory it's very accurate, also Fugaku was no fool if he could plot a coup'd against the Hidden Leaf. The funniest part of this theory is thinking of star wars "Sasuke... I am you FATHER" "NOOOOOO". Also, it would be pretty funny because it would turn out to be - 16 yrs ago : Minato vs Fugaku Present: Naruto vs Sasuke. Anyway the best theory in my opinion! Izuna : Madara's brother... The closest in strength to madara and knows who madara dislike the most. However, doesn't all the uchiha have something against the senju clan. - Possible, but not a huge plot twist that a lot of people are looking for... Disagreed Theories: Obito : He's dead and also in the Kakashi chronicles it showed his dead body. Even if his right side was crush and he had sharingan in the right side, that doesn't prove anything. Even Minato apologizes for not making it in time. - Worst theory ever in my opinion Shisui : Isn't he dead too? I'd be disappointed in this theory. Which one of these theories do you like and why?