Might Guy (マイト・ガイ, Maito Gai) is a jōnin-level shinobiof Konohagakure, and a major supporting character of the series. He is also the leader of Team Guy which consists of Rock Lee, Neji Hyūga, and Tenten.
Source: http://naruto.wikia.com/wiki/Might_Guy
Background
When Guy first took theChūnin Exams, he was placed in a team withEbisu and Genma Shiranui. During the second stage of the exams in the Forest of Death, Guy's team came face-to-face with Team Minato. Before Obito who had taken the lead could attack them, Guy unceremoniously kicked Obito in the face, inadvertently saving the boy from choking on a sweet. During the third stage of his first Chūnin Exams, Guy faced Obito once again where after trying to give Obito the nice guy pose was met with a thumbs-down. Though Guy defeated Obito, he faced his own loss against Kakashi Hatake in the next round. Since then, having befriended him, Guy sees Kakashi as his sworn rival.
In the anime, after the events of Kannabi Bridge, Guy was assigned to a mission with Kakashi and Rin. With the situation looking grim, Guy used himself as a scapegoat to allow his comrades to escape but is soon joined by Kakashi. The two shinobi are eventually able to stave off the Iwa-nin until Rin returned with reinforcements. The events of this mission would cause the two to build great trust in one another. But regardless, Guy still competed regularly with Kakashi, even in the moments preceding the Nine-Tails' attack on Konoha.
During Nine-Tails' attack on the village, Guy was among the young ninja barred from participating in the defence of the village by Kurenai's father and other older shinobi. In later years, before Guy became a jōnin-sensei, he heard rumours of an Academy student that was determined to become a ninja despite every indication that he couldn't. When this student,Rock Lee, eventually became his own student, Guy became determined to help Lee become a taijutsu master, as Lee did not have the skill to use ninjutsu or genjutsu.
Personality
Known for his thick eyebrows, green jumpsuit, and shiny bowl haircut, Guy often refers to himself as "Konoha's Sublime Green Beast of Prey" (木ノ葉の気高き碧い猛獣, Konoha no Kedakaki Aoi Mōjū). He has many mannerisms unique to him in the series that are meant to be seen as corny and old-fashioned, a reference to common clichés of "youth" (青春, seishun) in the anime. Guy is also known for going on about the "Power of Youth".
Guy has problems remembering the faces of persons he does not interact with frequently, best seen with his frequent fights with Kisame Hoshigaki, and also his fight with the Three Ryūdōin Brothers. Obito has even mentioned this trait in Guy. It was explained that this may be due to the fact that Guy always looks to the future instead of dwelling in the past.
Guy is best known for his "nice guy pose", which consists of giving a thumbs up, winking, and smiling with teeth so white they give the proverbial "ping". This action is often used by both Guy and Lee to indicate commitment to a statement they had just made, their highest form of a promise. Despite these odd mannerisms, Guy has shown to be capable of being as serious, ruthless and decisive as a mission's success demands if needed, as seen during the Invasion of Konoha and his battles with Kisame Hoshigaki. He is noted to be quite scary if switching to "serious", but very reliable.
Guy is on good terms with all of his students, but takes particular interest in Rock Lee, who reminds Guy of himself in his youth in retrospect that both are considered losers and have to work hard to achieve their goals. As such, Guy puts much more interest in Lee's training than Neji's or Tenten's, continuing to train Lee long after the others have retired for the day. Because of this, and due to Lee's unyielding desire to master the art of taijutsu, the two have developed a father-son relation that has pushed Guy to teach Lee a number of dangerous and forbidden techniques, giving the stipulation that Lee can only use them under specific circumstances. Although Guy knows of the dangers that teaching the techniques to Lee entails, Guy wishes for Lee to be able to prove himself to be a splendid ninja, and, as such, turns a blind eye to the repercussions. However, overall, Guy is a very attentive and dedicated instructor, who does everything in his power to make sure that all three of his prized students receive proper instruction in their own particular fields.
Guy, and, by extension Lee, lives his life by his own "My Rules" philosophy, which involves setting tougher goals for failure so something good comes of it. For example, he vowed to walk 500 laps around Konoha on his hands if he lost a simple game of rock, paper, scissors with Kakashi, and proceeded to do so upon losing, even though people stopped paying attention eventually. Lee's willingness to train in the same manner as Guy seems to have caused him to surpass his master's stamina, as by the end of Part I, Guy has difficulty keeping up with Lee, lamenting that he is not as youthful as he once was.
Guy's teacher-student relationship with Lee also carries distinct attributes, such as when Guy will punch Lee for a slight infraction of a rule. After Guy assigns Lee an arduous training task as punishment, meant to recapture Lee's focus and discipline, the two may then burst into tears and affectionately embrace, in brief regret for the strong blow Lee was given. Guy often attempts to act in a similar way towards his other two students, although Tenten is usually resigned and more willing to take part in his antics than the more stoic Neji.
Guy is the self-proclaimed rival of Kakashi Hatake, though the latter is indifferent to the former's annoyance. Since first losing to Kakashi during the Chūnin Exam, Guy randomly challenges Kakashi to contests of skill, and has acquired a record of 50 wins and 49 losses in doing so (50 wins and 51 losses in the anime). Given that the contests that make up this figure are so varied (ranging from Rock, Paper, Scissors to running races), this is not much of an achievement on Guy's part nor an accurate comparison of respective combat power. Nevertheless, Guy is proud of his record. Their competitions seem to, in part, be founded on the fact that the two are polar opposites. Guy has shown to be more easily excited compared to the more laid back Kakashi. He also relies mainly on taijutsu, in contrast to Kakashi's ninjutsu specialisation, and had to work tremendously hard to reach his level of prowess, whereas Kakashi's natural talent and Sharingan made it easier for him to improve. Nevertheless, both men are great friends and also have the utmost faith in each other seen during the Fourth Shinobi World War when they entrusted the protection of their blind spots to each other. This was also expanded on in the anime, where Kakashi told Tsunade that he would need a second-in-command during the war and wanted Guy to serve that purpose.Guy's and Kakashi's level of friendship was such that when faced with five fully transformed tailed beasts preparing to fire their Tailed Beast Ball in close proximity, he was more than willing to activate the last of the Eight Gatesto protect Kakashi, despite the fatal repercussions.
Guy can't handle sea rides and easily gets seasick when he has to travel by boat or ship. After getting over this and attempting the challenge at the Falls of Truth, Guy's "inner self" rebuked him for being too old yet still maintaining a hyper-active demeanour, adding that it is not healthy for old men like him to push themselves so hard.
Appearance
Guy is a tall and well-built man with high cheek-bones, thick eyebrows and black hair cut in a bowl style. Guy also wears a green jumpsuit, orange striped leg warmers and the standard Konoha flak jacket, though it's normally unzipped and has only been seen zipped up during the Fourth Shinobi World War. His forehead protector, is on a red cloth and is worn around his waist, like a belt. When he was a genin, he wore the same style of clothing with bandages wrapped around his hand and a brown scarf tied around his neck. His hair also had the shape of his signature bowl-style though a bit longer. When he became a chūnin, he donned the flak jacket, got his signature haircut and also removed the scarf.
His protégé Rock Lee has modelled himself after Guy and as such both men bear a striking resemblance: both naturally having thick eyebrows and the same hair cut.
Abilities
Guy is one of Konoha's most powerful ninja, and a taijutsu master. Despite considering himself a loser as a child, Guy is a very talented ninja, graduating from the Academy at age 7 and becoming a chūnin at age 11. Itachi Uchiha has, on numerous occasions, warned others against underestimating Guy. A warning from such a powerful ninja is an indicator that Guy is an excellent combatant. A testament to his skill as a ninja was him single-handedly defeating the extremely dangerous Akatsuki member,Kisame Hoshigaki. This is later reaffirmed when Kakashi Hatake trusts him to take on the Six-Tails alone during their battle with the reincarnated jinchūriki.
