I think Tobi is a konoha ninja
And he's sensei was danzo(or maybe other way around since he's aparaentlyimmortal?)
I feel danzo and Tobi had a good relationship back when Tobi started to train
Just like danzo, Tobi probably is not from the uchia clan with the shit load of sharigan eyes he took
Plus I bet those eyes were most of the people whom Itachi killed
So I feel like danzo and Tobi are related or linked closely in the story since danzo was part of the high class who ordered Itachi to kill his clan and Tobi probably stealing all those free eyes

But I doubt danzo is Tobi, that's just stupid.. I'm not saying your stupid, but if that was true the story would be plainly stupid
Just my opinion
This post was edited by nickchoi on Feb 15 2012 10:08pm