I actually thought for some time that it was SASUKE FROM THE FUTURE :devil: so dump haha.. but some theories really made up for it haha.. =D
This is what I was hoping for but I knew it was unlikely.
I dunno, I tried to not think about it really. Mostly because I wanted to be surprised and liked 'Madara' for who he was.
My personal theory I made up (which would've been so much more epic) was that in the mask Naruto & Kakashi were fighting was the actual Madara. The theory was that Tobi wasn't a person, it was a clan. A clan started by the real Madara Uchiha who recruited 3 supposedly dead Uchiha all from different time eras who had awakened their Mangekyo Sharingan. They're all linked by Kamui and then with his cover blown, Madara would summon:
Obito Uchiha (fourth generation- awakened MS before death, goofy good boy Tobi, fighting style: paper bombs)
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Shisui Uchiha (third generation- learnt of the uchiha genocide, fighting style: chains)
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Izuna Uchiha (second generation- works with madara, madara's 'tobirama', fighting style: genjutsu)
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Madara Uchiha (first generation- founder of 'tobi' fighting style: fire style)
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This way everybodies prediction would've been right and no disappointments. Also there's a tobi of every generation to match the 4 Hokage.