when he completes the training he is currently undergoing in the manga
it can't really control him per se but he loses all control when he releases 4 or more tails
When the Nine Tailed Fox attacked the Hidden Lief the 4th hokage sealed the beast within naruto but the chakra that the Nine Tails released was gathered by the fire land and put into Sora so they also had a weapon since they wanted to destroy the hidden leaf.
Yup. Because of the seal, Naruto doesn't have access to all of Kyuubi power and Kyuubi can easily regenerate all his chakra. He probably has other tricks up his sleeve.
Not at the moment. Naruto mastered rasengan in a week when it took the Minato (naruto's dad) three years, but Naruto has the nine tailed fox chakra that helps him heal fast and gives him more chakra and that's the reason he learned it so fast. It is also shown in manga that Minato was able to beat Madara, but not the nine tailed fox. If you can beat Madara you can beat naruto.
The whiskers on Naruto's face is the result to the exposure of the kyuubi's chakra.
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.
After 3 tails naruto looses his control and the nine-tailed fox's chakra takes over him
it can't really control him per se but he loses all control when he releases 4 or more tails
The 4th Hokage, Minato Namikaze, Naruto's father told Naruto that when he fought the nine tailed fox he felt that someone is controlling it and when he felt Tobi's chakra while in Naruto's. He told Naruto that it's the same chakra he felt while fighting with the nine tailed beast.
The nine tail fox chakra is very immense but it does not have an infinite supply.
no one but naruto
Naruto and fukasku can't merge because the Kyuubi's chakra rejects fukasaku's. Naruto and Fukasaku don't merge cause of the nine tailed fox's chakra.
he has a demon fox inside of his that whats to live he will die from overusing demon fox chakra.
If Naruto controls the Nine-Tailed Fox' his chakra is greatly improved, thus being able to use more jutsu. Note: His taijutsu also undergoes a tremendous transformation.
As of now, yes. Naruto can now control the Nine Tailed Fox after defeating it within himself. When he taps into the fox's chakra showing it off to Yamato and Killer Bee, he immediately senses an evil presence. This was an ability of the fox's, and Naruto has inherited that ability (no other sensory type ninja is able to do this). He senses Kisame, and lands a furious punch faster than anything Kisame has ever seen. If Naruto were able to maintain control of the chakra, there is no doubt he would have beaten Kisame. However, he was not able to, but Kisame does die shortly after.
Definately Naruto. Why? Naruto has the Ninetailed Fox sealed inside of him. That makes him a Jinchuriki. Sora has a small part of the chakra of the Ninetailed Fox, which makes him a Pseudo-Jinchuriki. Naruto is able to control the Ninetails' chakra, but not Sora. Sora could kill himself if he went 4-tails (cuz that's how many tails he can go to, no more--ultimate jinchuriki form for Sora). A battle Naruto VS Sora would have Naruto as a winner, because Sora would end up hurting himself, when Naruto would have slight control of himself.
He has control of the nine tails's chakra