it comes from the forbudden jutsu called death reaper seal
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.
he used a sealing jutsi on naruto to seal the nine tailedfox.
when naruto uses the nine tails power and loses control he is tempted to break the seal and realse the fox. the is also a key to the seal which can be used to open the seal a small bit, close it, or fully remove it.
When she and Naruto's father Minato was dying, Minato did not just seal the nine-tails in Naruto, but parts of his own and Kushinas chakra in Naruto, making them able to apear for Naruto once.
Try Sasuke Tayuya and Naruto(S)
No, Naruto's dad is the "Fourth Hokage" who died while fighting the "Nine Tailed Fox" Spoiler Warning! But when Naruto rips off the "Seal" to activate Nine tails, the fourth contacts him through the seal, talks to naruto and re-activates the seal hope this helps.
Not at first. But when Pain attacks the Hidden Leaf, Naruto was about to take out the Nine Tailed Fox Seal to release him but his father used a jutsu before he died so that right before the seal was broken he would appear. He appears to naruto and tells him that he is his father and stops him from breaking the seal.
Naruto transformed into the Kyubi when Jaraiya undid the seal, a little, to try and help Naruto get control over the beast.
yes he did its awsome he even said's in naruto's face that he's his father
Because he had to seal the 9 tails somewhere and he knew his son was going to be strong enough to control it (yes people believe it is a bit selfish) so he sealed it in him and put a back up seal when Naruto reached 8 tails.
2 people. Hinata tries but fails then Naruto goes to Kyubi when he is about to break seal. Fourth Hokage comes in his subconscious mind and helps him redo the seal.
Naruto used summoning, then gaara grabbed naruto. naruto couldn't move but could only move his head. then naruto thought of an idea. naruto headbutted gaara's seal and his invincible power was temporarily lost.