Kakashi Hatake  

Like his father, Sakumo Hatake, whose skills have been compared to that of the Legendary Ninja, Kakashi is considered a genius shinobi, graduating from the Ninja Academy at age 5 and achieving the rank of Chunin at 6. A few years after these accomplishments, Kakashi's father was disgraced by the village for abandoning a mission in favor of saving his comrades, which cost the Land of Fire dearly. Kakashis personal life appears to be as much of a mystery as the face behind the mask he has worn for most of his ninja career. He has no living family, or at least none he cares to acknowledge, and hes confirmed that everyone he loves is already dead. Like his father, Sakumo Hatake, whose skills have been compared to that of the Legendary Ninja, Kakashi is considered a genius shinobi, graduating from the Ninja Academy at age 5 and achieving the rank of Chunin at 6. A few years after these accomplishments, Kakashis father was disgraced by the village for abandoning a mission in favor of saving his comrades, which cost the Land of Fire dearly. Shortly before he died, Obito had Rin (a medical ninja) implant his Sharingan eye in Kakashi's damaged eye socket as a gift. As his first act with his new eye, Kakashi avenged Obito by killing the enemy ninja with his now-perfected Chidori technique, bringing the Kakashi of today into being.Years later Kakashi would become a member of the Konohagakure ANBU where he served as a squad leader. During an attempt to save Rin, Kakashi lost his left eye as a result of taking an enemy ninjas attack for Obito. To protect Kakashi in return, Obito managed to awaken his Sharingan and killed their assailant. Soon after saving Rin, a rockfall technique was triggered and a rock struck Kakashi on his blind side. He would have been buried beneath the rocks had Obito not pushed Kakashi out of the way, getting the right side of his body almost completely crushed in the process. He uses the bell test to test his students, which requires the three students to get the two bells he keeps on his person. Only those who get a bell get to pass, which would be difficult even with teamwork, as at least one ninja would fail regardless. However, the rule is only a ruse; the point of the test is to foster teamwork and to teach the students that teamwork is more important than the rules. Deeply ashamed and ostracized even by those he had saved, Sakumo committed seppuku, leaving Kakashi to bear witness to the event. After his father's suicide, Kakashi began to adhere strictly to the rules of the shinobi – in particular the rule dictating that the success of the mission must come before the well being of one's teammates, causing him to become arrogant, humorless, and by-the-book. During this time, he had several kōhai, named Yugao Uzuki and Tenzo, and recognized the latter as the most successful of his kōhai. It is unknown when or why he left ANBU, but he still wears iron guards on his gloves, a characteristic of ANBU uniforms.Obito's death profoundly changed Kakashi, and Kakashi adopted many of Obito's traits. One such trait was Obito's concept of teamwork, which is most clearly seen in the way Kakashi tests newly-graduated students hoping to become a squad under him. Shortly before he died, Obito had Rin (a medical ninja) implant his Sharingan eye in Kakashis damaged eye socket as a gift. As his first act with his new eye, Kakashi avenged Obito by killing the enemy ninja with his now-perfected Chidori technique, bringing the Kakashi of today into being.Years later Kakashi would become a member of the Konohagakure ANBU where he served as a squad leader. Kakashi's personal life appears to be as much of a mystery as the face behind the mask he has worn for most of his ninja career. He has no living family, or at least none he cares to acknowledge, and he's confirmed that everyone he loves is already dead. Team 7 is the only team to realize this, and as such becomes the only team Kakashi passes into Genin-status. Kakashi also inherits Obito's chronic tardiness, due primarily to losing track of time during his frequent visits to Konoha's memorial site, where Obito's name is engraved. Ironically, this very habit is one that Kakashi was often annoyed at Obito about. Obito was supposedly late due to random good deeds. Deeply ashamed and ostracized even by those he had saved, Sakumo committed seppuku, leaving Kakashi to bear witness to the event. After his fathers suicide, Kakashi began to adhere strictly to the rules of the shinobi – in particular the rule dictating that the success of the mission must come before the well being of ones teammates, causing him to become arrogant, humorless, and by-the-book. Hokage Team 7 is the only team to realize this, and as such becomes the only team Kakashi passes into Genin-status. Kakashi also inherits Obitos chronic tardiness, due primarily to losing track of time during his frequent visits to Konohas memorial site, where Obitos name is engraved. Ironically, this very habit is one that Kakashi was often annoyed at Obito about. Obito was supposedly late due to random good deeds. During this time, he had several kōhai, named Yugao Uzuki and Tenzo, and recognized the latter as the most successful of his kōhai. It is unknown when or why he left ANBU, but he still wears iron guards on his gloves, a characteristic of ANBU uniforms.Obitos death profoundly changed Kakashi, and Kakashi adopted many of Obitos traits. One such trait was Obitos concept of teamwork, which is most clearly seen in the way Kakashi tests newly-graduated students hoping to become a squad under him. During an attempt to save Rin, Kakashi lost his left eye as a result of taking an enemy ninja's attack for Obito. To protect Kakashi in return, Obito managed to awaken his Sharingan and killed their assailant. Soon after saving Rin, a rockfall technique was triggered and a rock struck Kakashi on his blind side. He would have been buried beneath the rocks had Obito not pushed Kakashi out of the way, getting the right side of his body almost completely crushed in the process.