It is a Double tetragram seal with a 8 sign seal, so that if any of the 9 tails chakra is released it will form into Naruto's chakra. It then has a 5 Pronged seal in witch Orochimaru put there to fully suppress the 9 tails chakra to make Naruto weaker
yes he does he tries to cut narutos stomach and release the demon
im pretty sure it he should up in the first episode because they were showing all that happend to the town and they showed how narutos dad sealed it away in narutos stomach
yes he does but he shows up when he was about to ripp the seal off of his jinchuuriki
I'm guessing because the kyuubi wants naruto to use his power, not to seal him away and never think about him again.
No.
sakura
Naruto's dad used part of his chakra and his wife's (naruto's mom) chakra to seal the Nine-tailed fox inside Naruto. They aren't the seal but they are there to help Naruto control the demon fox. Naruto's dad saves naruto from being overwhelmed by the fox, and in the most recent manga (495 or thereabouts) his mom helps him defeat the fox.
B
narutos dad and 4th
October 10
He has no sisters.