This is what wikiapedia says about The Fourth Hokage: The Fourth shares many similarities with Naruto, including the same spiky blond hair, blue eyes, same techniques, the same blood type (, and overall similar personalities as noted by Jiraiya. Itachi Uchiha noted Naruto to be the Fourth's "legacy". Furthermore, when Jiraiya was trying to force Naruto to release his demon fox chakra, he pushed Naruto off of a cliff, saying, "Forgive me, Fourth," as he did so. OK try this theory on...I don't think Naruto has any parents because clones don't have parents. What's that you say?! Naruto is a clone?! Yes I think The Fourth created an advance clone-jitsu that allowed him to make a perfect living clone of himself. He than used his perfect clone to trap the nine-tailed demon in. This also explains why Naruto's favorite jitsu is his shadow clone jitsu. I believe in time Naruto will develope his clone jitsu to where his clones will have the ability to use jitsu also. Imagine five Naruto's using five different jitsus at the same time from different directions; he will be unstoppable. I'd like to know what you guys think.