Kakashi Hatake

Kakashi Hatake (はたけカカシ, Hatake Kakashi) is a major character in Naruto and has been an important protagonist since his introduction to the series. Twenty years after Shippuden, Kakashi is still a fiercely loyal Konoha shinobi.

Background
Kakashi is the only son of Sakumo Hatake, also known as the White Fang of Konoha. His mother apparently died when he was young. Kakashi has been known since a young age as an extremely gifted prodigy, regarded by many as the best of his generation. He had received top marks and had showed an innate aptitude for the ninja arts while in the academy. This permitted him to graduate from it in a single year at the top of his class at the age of 5, and then becoming a Chūnin a year later. Despite his own success, his father fell into disgrace after choosing to save his comrades rather than complete an important mission, causing Konohagakure to suffer in the war effort. Dishonored, Sakumo took his own life after a deep depression and a drop in his skills, which caused Kakashi to lead his life strictly by the ninja code.

After graduating, Kakashi was then teamed with Obito Uchiha and Rin under the leadership of Minato Namikaze, the future Fourth Hokage. Kakashi's relationship with Obito and Rin was noted to be very similar to that of Sasuke's relationship with Naruto and Sakura respectively, as he is known as the indifferent genius who shared a complicated relationship with his teammates, that later developed into a close friendship.

Personality
Kakashi became more stern and serious following his father's death, following all the rules and scorning any who disobeyed them, like his teammate Obito. This caused Obito to resent Kakashi, as Kakashi showed little kindness to his teammate. This changed when Obito was killed in a mission, and Kakashi and Obito became friends in the latter's final moments.

Obito's death had a huge impact on Kakashi's personality. He is now more cheerful and shows greater concern for his teammates and students, placing their safety over the successful completion of a mission. He is also regularly late for appointments. This is because of his frequent visits to the memorial where Obito's name is engraved, where he loses track of time. However, Kakashi is still just as carefree and emotionless as he was during his youth, often speaking bluntly about sensitive topics.

Kakashi claims to have lost everyone who was close to him, causing some reluctance to allow others to get close to him. Of the people who are still alive, Kakashi is on the best terms with his students, although he is on good terms with almost everyone in Konoha. After the formation of Team 7 he begins taking a special interest in their development, as shown from his regular checking up on Naruto and his eating habits. He similarly refuses to go on a mission at the end of Part I so that he can stop Naruto and Sasuke from killing each other. Kakashi is just as devoted to his friends and the rest of Konoha, such that his signature jutsu, the Lightning Cutter, has been made on the principle of duty, and perfected on the principle of protecting loved ones.

Kakashi has a rather solitary and matter-of-fact attitude. His calm and detached demeanor has been called “cool, hip, and trendy” many times by Might Guy. Despite his increasingly growing reputation and prowess as a ninja, Kakashi has shown no signs of arrogance, and is rather modest about his abilities. When suggested by many for him to become Hokage, Kakashi admitted that such a position was unfit for him. His naturally calm attitude is used to his advantage in battle, as it becomes easier for him to maintain his composure to stay focused on the situation at hand, and ultimately notice everything around him. As a result, he can quickly adjust to any situation to make keen and thought-out decisions, allowing him to stay steps ahead of his opponents.

Kakashi has an ongoing, albeit one-sided, rivalry with Might Guy. In trying to prove himself superior to Kakashi, Guy challenges him to competitions of questionable value ranging from Rock, Paper, Scissors to running races. Guy has a record of 50 wins to 49 losses, which he is particularly proud of. Kakashi, on the other hand, shows very little interest in their competitions, which only further inspires Guy to defeat Kakashi and his "coolness".

Kakashi reading one of Jiraiya's Icha Icha novels.Kakashi is an avid fan of the Icha Icha series of novels, implying that he is slightly peverted. He is typically seen reading one of the books when not involved in a fight, making it the only one of his reportedly many hobbies that is ever seen in the series. He even went and read it during his first fight against Naruto, as Naruto was, at that time, too weak to pose much of a threat. Despite his fondness for the books, he grows uncomfortable when reading passages to others, presumably embarrassed by the adult content (as noted when they were decoding Jiraiya's last message). Naruto, on one occasion, has used these books against Kakashi, threatening to spoil the ending of the latest installment to force Kakashi to let down his guard (by shutting his eyes and blocking his ears) to prevent learning the ending of the story. Kakashi felt humiliated when he realized that Naruto hasn't read past the first ten pages, and that he was tricked.