(Character description taken from GiantBomb.com)

Naruto is generally a very simple minded, easy going, cheerful person. He often rushes things, and misses obvious things such as Hinata's constant shyness around him.

In the beginning of the series, Naruto is very fun loving, often pulling pranks on fellow villagers. This usually ends in a scolding from Iruka Umino. Naruto later reveals he did these pranks because he liked the attention, as he grew up with no parents or friends. He's also very beginning when he's young, despite being largely unskilled in comparison to his peers.

As the series progresses and Naruto gets older, he eventually starts to become more serious and wises up.

As a Jinchūriki bearing the Nine Tailed Fox, Kurama, Naruto was often jeered at and avoided by most villagers. Because of this, Naruto was largely alone in the early parts of his life, and would often seek out attention by pulling pranks. This would become Naruto's main reason want to become Hokage, so everyone in the village would acknowledge and respect him. Eventually, Naruto's actions towards saving the village (And even the whole world) lead to many villagers respecting and even admiring him. In the movie, Naruto: The Last, Naruto has fans who come from all different villages just to see him.

Naruto has a strong dedication to his friends, often willing to put his life on the line to protect them. Despite his treachery towards the Hidden Leaf Village, Naruto has always considered childhood rival Sasuke Uchiha to be his best friend. In the end of the series, Naruto reveals that he cared for Sasuke so much because he felt they knew the same pain of being alone, and he constantly would chase after him because Naruto did not want to see him hurt when there is no need to.

As Hokage, Naruto seems to have grown even more mature. When Boruto was pulling pranks, Naruto knew this was because he didn't have a father figure, and spent time with him. This shows that Naruto cares deeply for his children.