Tobi is obito and I will prove it this is a story of what I think happened
Tobi was left for dead or he died orchimaru stumbled uppon his body and decided to take it back to his lab to experiment on it. Since his whole right side of his body was crushed he was probably injected with dna possibly madara since he probably came up with the moon eye plan. One day orochimaru is discovered and obito manages to escape with another child zetsu. The war and that experience of being experimented on orchimaru and madara dna in his body changed obito in a way he thought the only way was via the eye of the moon plan. So about a year later of training etc... He decides to attack naruto He clashes with minato at the time he is 14-15 anyway after a failed attempt of getting the nine tails one year later he goes to try for yagura the third tails jinchuriki By this time obitio is around 15-16 and we can see some time has passed due to the change of his hair length so he succeeds. Anyway somehow during the war he causes nagato to gain the rinnegan we dont know how a person gets this so I cant really elaborate but it was possibly the pain of seeing his parents killed right between his eyes awakened it. Now you gotta ask yourself how could two ninja mistake civilians for ninja? Well obito probably cast a genjutsu on them which caused them to kill nagatos parents. So the akatski is formed and obito sees them as a way of achieving his objectives so he sends zetsu to infiltrate to see what he can find out. He later joins after zetsu and then that brings us up to date with the current events.
Question you might be asking? Tobi was crushed by a boulder there is no coming back how can he live from that? from that. We have seen alot of serious injuries in naruto over the years the rasengan which is an s class jutsu naruto has used countless of times on people and they have managed to survive so its possible he could have survived a boulder and even if he was killed he could have been easily brought back I mean look at chiyo she brought back gaara orchimaru could have found a technqiue able to revive him or something. Tobi is way to young explain how he could have matched minato? Itachi achived ms and age 12. He slaughtered the entire uchiha clan. If he can do that at age 12 matching minato at age 14 or 15 is very possible How do you know zetsu is one of orochimarus experiments? His zuzuzu matches the one that when yamato used on of his wood style in a manga chapter we know he got wood style from senju so its possible zetsu had some senju in him but has affected him differently.
Points I would like to make. Tobis skin on the left side of his face is extremely sagged this is caused when he was crushed by the boulder not all age if you look at other old characters you will see they dont have wrinkles like him.
In one of the naruto card games it says that zetsu hometown is konoha which supports my theory of him being fromt here and getting experiments by orchimaru.
His original left eye was gone the first time he appeared since when he uses his space time jutsu he only uses it in his right eye.
Being a uchiha he can support the rinnengan.
His space time jutsu is very similar to that of kakashi but since the eye is originally his the eye is perhaps limited in kakashi and it being his he has more control over it.
He was a student of the fourth who was a master of space time jutsu he could have easily picked up some knowledge from him.
The name tobi and obito have the same words except for one o.
So guys what do you think leave your questions in the comments below
Guys, talking about when did Madara die. When he
was revived, one of his first words were
''It would appear that little brat
Nagato managed to grow'' That means that
the real madara was still there when Nagato was a
kid. And that means that Madara lived quite a long
life after fighting Hashirama.
We have established that Tobi is the other White
and Black halves of the original Zetsu. The
question should be what is Black Zetsu? Probably,
a clone of Uchiha Madara implanted with a cell
from his brain. When Tobi shows Sasuke his
Sharingan we see that his face does look similar
to Uchiha Madara especially with the wrinkles
under his eye. However, this side of Tobi also
loses his arm against Foo and Torune and when this
happens it looks like a White Zetsu arm. Since
White Zetsu can copy a persons chakra down to the
cellular level and he has a cell of Uchiha
Madara's brain he would be able to make a
clone of Madara when he showed Sasuke that part of
his face. Now when Tobi is fighting against Konan
and she destroys his mask, for the most part, the
other Sharigan that we see used for Tobi's
Izanagi has black all around is like a Black
Zetsu. If we look at the facts the other halves of
the original Zetsu add up with Tobi. Also we must
note all Tobi's dojustu (Sharigan, Rinnegan)
are always activated. Meaning he is not an Uchiha
because he cannot turn off his dojustu.(just like
Kakashi's eye) Finally Tobi needs a live
Uchiha with Permanent Mangekyo Sharigan
(Sasuke)for some reason. I honestly believe Tobi
is a Zetsu more of the Black half than the White.
I believe Black Zetsu was a experiment done by
Uchiha Madara to carry on the Moon's Eye Plan
and to eventually resurrect Madara. However, Tobi
is just that, and experiment he has grown tired of
being a pawn and wants to take action into his own
hands. Plus we always, always see Zetsu and Tobi
together when we are first introduced to Tobi he
is taking orders from Zetsu and Tobi has a split
personality just like yep you guessed it Zetsu.
Look over the facts Tobi is the other halves of
the original Black and White Zetsu.