Naruto Uzumaki(うずまきナルト, Uzumaki Naruto) is the eponymous title character and primary protagonist in the anime and manga series Naruto created by Masashi Kishimoto. In the series, Naruto is a young ninja who encases the spirit of a violent fox demon that attacked his village before his birth.
Naruto was born on October 10 in the fictional village of Konoha to Kushina Uzumaki and the Fourth Hokage, Minato Namikaze. When Naruto was a newborn infant, the powerful Kyubi attacked his village. In order to save the village from destruction, the demon fox was sealed in Naruto's newborn body by his father, the active Hokage at the time, who sacrificed his life to do so. Despite the Fourth Hokage's dying wish that Naruto be viewed as a hero for serving as the container for the demon, the adult villagers of Konoha harbored a fierce hatred for him. Many believed that Naruto and the demon were one and the same and openly displayed an abhorrence towards Naruto, thus leading to the unknowing village children picking up the adults' hatred. However, no one told Naruto about what his body harbored until he was twelve years old, leaving him confused for most of his childhood as to why the villagers of Konoha treated him with hostility.
Naruto is seen to be a prankster and a loner. He lives alone in a small apartment and has supposedly done so for years. Even though Naruto was treated as an outsider, he was befriended by his compassionate ninja instructor named Iruka Umino when he was twelve. Although Iruka's own parents perished during the battle with the demon fox, he refused to view Naruto as the cause of their deaths. Instead, Iruka attached himself to Naruto because he was similarly isolated after the death of his parents. Naruto was deeply moved by Iruka's kindness and confidence in him. As a result, Naruto now values Iruka as a father figure, as well as an instructor.
His signature jutsu is the Kage Bunshin no Jutsu (影分身の術, Shadow Clone Technique) that he can use many times and even create a lot of shadow clones because of his great stamina won by having Kyubi inside him. Using this jutsu, Naruto develops a large number of combos techniques and allows him to use one of the ninjutsu created by the Fourth Hokage: the Rasengan. Although this jutsu is normally performed with only one body, Naruto needs one shadow clone because of his lack of chakra control. This weakness is also noted when he tries to perform the Kuchiyose no Jutsu (Summoning Technique) to summon powerful toads and he ends summonning toads in little size. In Part II, Naruto starts training to be able to use his Wind Element and combining it with his Rasengan to create powerful variants. When Naruto finally accomplish this Kakashi mentions that now Naruto could be stronger that him. Before going to the Land of Wind to rescue Gaara, Jiraiya mentions to Naruto not to use a certain jutsu. However, although in that mission Naruto performs a bigger version of the Rasengan this is never confirmed if this is his new jutsu.
Being the host of the demon fox, Naruto occasionally takes on characteristics of the demon fox's violent and mischievous behavior. Physically, Naruto has some of the demon fox's characteristics, such as whisker-like marks on his cheeks and larger canines teeth than normal. His eyes are also somewhat slitted like a fox. He also has increased stamina and healing ability, which allows him to recover from major injuries within a day and minor injuries within a few seconds. At first, the fox demon's chakra only exposed itself when Naruto encountered life-threatening situations, or the feeling of extreme stress or rage. Later, Naruto learns to tap into the chakra through training, as well as demanding it from the fox demon. The reason Naruto is able to access its chakra is because of the unique way in which it was sealed. Though the fox remains trapped within Naruto, its chakra can leak out through the seal and mix with Naruto's. The fox's near-limitless supply of chakra becomes an invaluable resource for Naruto, often turning the tide of a difficult battle in his favor. Beyond that, the fox's chakra seems to increase in intensity with time. However all his abilities are enhanced by using the chakra of the Kyubi. But during this state Naruto gets angrier depending on how much chakra he uses and starts losing his control. This is noted specially when a dark red chakra that makes sounds of water appears around his body. A large red chakra tail appears around his body showing that the seal of Minato Namikaze is turning weaker. During the time-skip the seal becomes weaker, veing able, Naruto, to use four red chakra tails. In this state his body turns red and he loses his consicous, being able to attack even his partners. Naruto becomes so strong in this state that even Orochimaru mentions he could be killed with a single punch. The use of this state also reduces the overall life-span of Naruto because of the continuous use of the ability to heal his injuries of the Kyubi.
Naruto consistently ranked in the top two (taking first place three times) in the first five official Shonen Jump character popularity polls. However, in the sixth character poll, he ranked fourth.