Yes.It is true because thats why he is only using his left eye the right eye has been removed(kakashi's right eye) thats why he ca't use his right eye otherwise if he could he wouldn't even wear that mask

You've got it backwards, he only uses his right eye, and doesn't show the left.

If he was still using obito's eye it would look the same as Kakashi's mangekyo I believe, and it doesn't. If he was using his own eye he would have transplanted both of them.

I've seen it suggested that the reason you only see one of his eyes is because he sacrificed the other to izanagi when fighting the first hokage.

This would explain why he is "a shell of himself", as well as how everyone though he was dead.

I don't think it is the real Madara in someone else's body.
I think it is either Madara in his own body, or someone else entirely.

^ what he said. And also he can't be using Obito's body because if that were the case what was Madara before Obito was born? And if he used the reincarnation jutsu like orochimaru then that wouldnt make sense either because he would have Obito's sharingan which would mean he would have the same eye as kakashi. That can't be because kakashi's is much weaker than madaras and only teleports to other dimensions, while madaras sharingan teleports to other dimensions AND place as well as teleports his own body.

Hmmmmm

thats true but he can use that forbidden jutsu orochimaru used to tranplant his soul into another body for eternal life.So he could remove the right eye and store it (u saw all that sharingans when he transplanted itachi's eyes into sasuke)and then he uses the forbidden jutsu to transfer his sould into that body because his body was to old and he could have sacrificed his left eye to izanagi while fighting the first hokage yes.thats why he only uses his right eye

If it's true that madara using obito's body ...
hw come obito even still alive ...
if its been watched in the series that he was buried under the rocks n his whole right body was tottaly damaged n then buried alive it don't make any sense that he came out alive ...
n if he were alive every1 would have known ...
n if he were dead it won't make anysense that madara taken his body cuz madara has a grown-up body ...
if any1 has another explanation plz i wanna hear it

you have 2 many theories bout hu is really Uchiha Madara....some of diz theories r particularly right...but many of these theories has loopholes in it...plz let me explain...

Theory of OBITO UCHIHA being MADARA UCHIHA: I think this is not particularly true...y?? because Obito as many generations after Madara...as what Almighty quoted...and when Obito died..his body was smashed and only his left eye remained undamaged, which is transfered to Kakashi...Now if Obito is portraying 2 be Madara...How can he resurrect himself??? Also...Tobirama Senju d 2nd Hokage is the known creator of the Impure World Resurrection Technique...I pressumed he created this technique long before the unification/creation of Konoha and this was classified as a Kinjutsu by his brother the 1st Hokage Hashirama Senju...and If you have read the Manga where, together w/ then Sarutobi, Danzo and the future elders of Konoha, are being chased by Ginkaku nd Kinkaku squad...I pressumed that by this time...he used this Kinjutsu again to fight the silver and gold brothers...and it was seen by his subordinates by that time...thats y...from then on..it was known 2 d world of ninja as a jutsu created by him...so basically..Madara doest know anything bout diz technique not till the time diz technique was used again..where Madara was pressumably dead....so thats y he was never able 2 use diz technique...so I pressumed it is not Obito.

Theory of SHISUII UCHIHA being MADARA UCHIHA...As you have read the recent manga...it shows that..Shisuii is ALSO a conspirator in the said UCHIHA INCIDENT together w/ Itachi as ordered by the Elders...by the time that Itachi and Shisuii were talking..when he revealed that his Right Eye is removed by Danso (dnt know how Danzo do it though) I pressumed that by this time he realized that he's will not be able 2 do this mission so he asked Itachi to keep his left eye...( I pressumed that he has a incurable sickness this time and I pressumed he had also met this so called Madara..to kip this so called Madara from using his eyes) as we all know that his genjustsu is far more greater than Itachi's... so I think its not Shisuii.

Now lets Examine the FACTS:

First..this MADARA cannot use Impure World..d only known users r..d 2nd hokage, orochimaru and kabuto...now think about this...aside from this 3..who do you think..have seen the execution of this tecnique but cant execute the Impure World???

Second...The ability of his Sharingan is Teleportation...but I think it was not...you see..the ability of the sharingan in its simplest is IMITATE a technique it saw..and you can only activate a special ability if you used the MANGEKYO SHARINGAN...Transportation and teleportation are jutsu that uses certain materials like seals...but not necessarily hand weave...and if you read the manga and saw d anime..u will noticed that he is NOT using the MS when doing this technique...rather I pressumed that this is a technique he used used permanent materials w/seals..on permanent places...and we known only 2 who can do this techniques with mastery..the 2nd hokage and Minato Namikaze d 4th hokage...which they called God of Thunder...

3rd....The fact that this so called MADARA...could not explain what has happened between his fight w/d first hokage...the events that transpire before, during and after the fight...makes his identity almost visible...And the fact that the 1st hokage survived this battle..I pressumed that only the 2nd Hokage and their elders know what really happened between d fight because Tobirama is Hashirama's brother

Now...think about this...in these 3 statements I made...which is the common denominator??? Now you may do the analysis ^_^

oh and let me add another fact.....This so called Madara's Statement on the said INCIDENT.....he greeted Danzo like a long friend and stating that its been a long time since "that" incident...I dnt know if this statement pertains to the UCHIHA MASSACRE or the incident long before we knew them....

daisuke you are a genius. haha it really does all fall into place. nice job. but i wont ruin the puzzle for anyone else who reads.

By those statements it almost makes it seem like you are trying to imply that he is the 2nd hokage, but that can't be true because Orochimaru used impure world resurrection to summon the 2nd who was then sealed by the 3rd.

The only other real alternative I gather from your statements is the 4th but he is/was sealed inside Naruto.

Different hair colors too.