Why don't we know anything about Obito's parents? It’s become quite clear in chapter 600 Obito still has a pretty big part in the anime.
Now this is where I start getting iffy about Obito's MO.
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That's a pretty bold statement, where Naruto said he would rather stay stupid his whole life when confronted with the same idea of ninja. Obito said he wanted to crush the idea.
This next frame here can be taken two ways.
1) He wasn't ready to die
2) This was all planned and he wasn't ready to leave the leaf village.
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It can be taken either way, but I'll use it as option 2 for the moment.
When you can't see someone’s face the only way you can gather an idea of someone’s identity are sensing their chakra signals. Time and time again people have confused Tobi for Madara, even Karuma confused the chakra signals. Who have similar chakra signals? ..... family.
Both Obito and Madara have massive fire Justus, Where Sauske also an Uchiha uses a large Lightning Jutsu instead of fire.
Both Obito and Madara look very similar, are both very gifted Uchiha and have the same goal in mind.
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I believe that Madara is Obito’s father and the whole thing was planned from the beginning. Madara had no allies left, why not have his own son to continue his vengeance?