Minato realized that the man who attacked Konoha using 9-tails is Madara Uchiha though he was in doubt because he did not beleived Madara to be alive but anyways he did seal the fox in his own son to make him able to face madara one day or to resist any such attack again and to make his son stronger and village's hero.
anyways the task to prevent madara getting hold of 9-tails lies on naruto's shoulders now!
His father is the Fourth Hokage who died when he sealed the kyuubi into Naruto and his mother is Kushina and he doesn't have any siblings, he's the only child.
The Fourth Hokage because not only is there resemblance, but there is a recent chapter that escapes my mind where naruto remembers Jiraya telling him about how the fourth hokage had married, Uzumaki Kushina, but the fourth hokage had died before naruto was born, and sealed the kyubbi within naruto. If you do not believe me the best naruto info source is leafninja.com the link to my info is http://www.leafninja.com/biographies-U.php#Kushina hope that this answers your question
No, the 4 hokage sealed some of his chakra in Naruto which allowed him to appear in Naruto's mind. Then he told Naruto that he was Naruto's father.
nothing will happens to his sasuke will be a hokage too with naruto
Um...O.o No. Kyuubi is the title of the bijuu sealed inside of Naruto. Naruto's mother was Uzumaki Kushina.
Naruto isn't or hasn't been an Hokage, and Juubi (ten tails) is currently sealed to the moon, as stated by Madara.
somewhat. He sealed part of his soul inside naruto
The Third Hokage came back to be the leader of Konoha when the Fourth Hokage died when he sealed the 9 tailed beast.
Prior to Naruto being Kyuubi's jinchuuriki, Naruto's mom, Uzumaki Kushina, was Kyuubi's second jinchuuriki. When Naruto was born the seal grew very weak and Madara managed to break the seal and use the Sharingan to control Kyuubi's mind and force him to attack Konoha. Nobody really sent him, he was freed from his seal but then the Yondaime sealed him into Naruto.
Uzumaki Kushina was the second host of the Kyubi. So yes, the kyubi was sealed within her until after Naruto was born.
The 4th Hokage sealed him using Fuuinjutsu: Shiki Fuujin.
He does meet his father in Pein vs Naruto. It's when Naruto starts going 8 tails in his anger because of Pein who struck Hinata and killed her.(she comes to life later on again). The fourth hokage stops him from going eight tails and they have a short conversation too. So far in all the episodes/movies/manga chapters that have happened in Naruto, Naruto has never met his mother but she is mentioned in an episode. You can read about her on narutopedia. Her name is Kushina Uzumaki. he also meets his father in the 4th naruto shippuden movie