Yodaime. . .maybe he is Naruto's father. . .

yea, he could be

That's what I think... Then theres also that rumor that Yondiame is the Akatsuki leader...

I've heard that too and I still say that he's Naruto's dad... just like I say Guy is Lee's dad. If you look at them there are too many things alike.

He is Naruto's dad. It's in one of the later chapters. And Yondiame is Kakashi's leader, right? I hear it everywhere. Anyways, I don't usually vote high for any Naruto picture but I am a big fan of Yondiame and Kakashi's past (hey, that theme fits in here in a way that Yondiame is here) so~

He is Naruto's father. It says Naruto looks like his father the most, but has his mother's personality. Yondiame was very calm and somewhat collected where as his lover was more hyperactive and fun loving.