旗木卡卡西
is the leader of Team Guy who dedicates most of his time to his pupil Rock Lee, who emulates himself in his sensei's image and ideals, including his "My Rules" philosophy, which involves setting tough self-imposed penalties for failure in the belief that the punishment will make him stronger. Like Lee, and choosing not to use other ninjutsu skills out of respect for his student, Guy is a specialist in physical attacks and taught Lee many of the techniques he learned from his father Might Duy, such as the ability to unlock the Eight Gates which safely restrict the flow of chakra through the body. When not teaching Lee, Guy is usually found competing with his self-proclaimed childhood rival, Kakashi Hatake. Throughout the series, Kakashi never displays a particular interest in their rivalry, which only further motivates Guy to defeat him. Guy is an extremely capable ninja as seen in his fight against Itachi Uchiha and his recurring confrontations with Kisame Hoshigaki, beating him single-handedly on two occasions. During the Fourth Great Ninja War, Guy is forced to use the Eighth Gate in a failed attempt to defeat Madara. Though Naruto uses the power of the Sage of Six Paths to save his life, Guy's right leg is too damaged to be fully healed. Though he is not wavered from his shinobi career, he remains in a paraplegic state by the events of the epilogue.