Naruto IX: [Epilogue Intensifies]

[Ramza00]

Wasnt it cannon that tobito or madera was mind controlling the third mizukage to cause the bloodline massacres? Or is that just one of those fannon things thats so commonly done that everyone starts to believe it who reads fanfic (like me)?

Yes in the Magna canon, Tobi was mind controlling one of the Mizukages, if I was remembering the numbering correctly it was the 4th Mizukage. It was specifically the Mizukage who had the perfect synchronization with the 3 tails. [Something that only Killer B, the 4th Mizukage, Madara, and Hashirama ever achieved.] Except this feat is a lie, for it was not perfect synchronization or else the 3 tails would volunteer to get him out of Tobi's mind control and the 3 tails chooses not to. [Thus the relationship was one of domination like most relationships of the tailed beasts.] The 4th Mizukage was an inferior Naruto copy that Tobi could manipulate and control.

Tobi was mind controlling this Mizukage per manga canon and not just anime and fan spin offs for that is the reason why Shark Boy Kisame Hoshigaki joined Akatsuki. At the time Tobi had long hair like Madara, even though a similar time frame of the Nine Tails Attack on the Hidden Leaf Village Tobi had short hair. Tobi with long hair like Madara was thought to be Madara to Shark Boy Kisame, except Kisame really did not care for he saw all of reality like names as lies. Kisame will "know" Madara by his deeds and actions not things like a name or a false face.

This Naruto world is one built on a "web of lies" [false truths, mistruths, and misunderstandings] as Kisame would echo as his central understanding of reality.

This Naruto world is one built on a foundation of official manga canon, but everyone builds on top of it like the anime and those fanfictions.