If you search my name you will find that Arashi Uzumaki is the fourths name, and that he is naruto's father. Its also believed that he is the leader of akatsuk, alsoi I have not confirmed the rumor about there being an Uzumaki clan. Let me give you some hard evidence to why I believe he is alive and narutos father. The fact that he was picked instead of any other baby to be burdened with the kyuubi, the unparalleled similarites between the two, the fact that his teacher is also teaching naruto and out of the entire village he is the only one to look lile naruto. I believe he is alive because the jutsu sarutobi(the third) performed was completely different than the one he performed. Please let me explain on this. The death seal jutsu is where the user sacrificies his own soul to kill that of another and together become eternally sealed in the god of deaths stomach, but narutossituation is quite different. Arashi sealed the kyuubi in naruto and then disappeared but theres no grave-site. which leads me to believe that he is still alive because he didnt perform the death seal jutsu like everyone believes.