Birthday: January 1
Height: 184 cm
Weight: 76 kg
Ninja Rank: Jonin
Guy is a tall male shinobi with thick bushy eyebrows and a bowl shaped haircut. He wears a green jumpsuit with the standard shinobi flak jacket, which he normally leaves unzipped. He wears his forehead protector around his waist like a belt and orange leg warmers.
Guy has a boisterous and cheerful personality. He is known for his cliche form of speech and his rants about the "Flames of Youth". He lives his life by his own "My Rules" philosophy, which involves setting tougher goals for failure so something good comes of it. He once walked 500 laps around konoha on his hand after he lost a game of "Rock, Paper, Scissors" to Kakashi
. He has a good relationship with all his students, especially Rock Lee
. He takes a particular interest in Lee because Lee reminds him of himself when he was younger, in that they were both considered to be losers and have had to earn everything through hard work. He has developed a father-son relationship with Lee. Guy considers Kakashi to be his rival. Kakashi however, is indifferent to their rivalry, which seems to greatly annoy Guy. Despite his cheerful personality, Guy has shown to be capable of being as serious, ruthless and decisive during missions and battles.
Guy has said "what it takes to be a ninja is power in other words effort and this is the grounds of my effort."
Might Guy is the leader of team Guy, a team of ninja older than the rookie generation by a year. This team comprises Neji Hyuga, Tenten, and the prodigal Rock Lee, whom he sees himself in. He is an elite jonin, and one of the strongest ninja in the village of Konoha. He is so fond of his student Rock Lee due to his dedication to hard work and his dream of becoming a successful Ninja using only Taijutsu and basic chakra control, something Gai admired. not the least because he himself is a master of taijutsu, which makes him the most ideally suited teacher. Guy made it his goal in life from the moment he saw the amazing spirit of Rock Lee to make him the best he can be. He then teaches Lee everything he knows about taijutsu, including forbidden techniques such as the Primary Lotus and the celestial gates, both of which damage the users body, possibly even to lethal levels. Gai shares a very strong relationship with Rock Lee, to the point where they appear as father and son, prompting fan speculation on the matter. The likely case is however, that Rock lee admired Gai so much that he has modeled his own life on him. Wearing the same style clothing, and cutting his hair in the same style. They share a healthy relationship, both believing in the 'power of youth' and hard work.
Gai's specialty is his outstanding taijutsu, which focuses on the Iron Fist technique. However, unlike his student, he can also use ninjutsu and genutsu, though rarely does so, as his taijutsu is so strong and feared, that even Akatsuki such as Uchiha Itachi have heard of him and consider him a threat. He uses Ninjintsu and genjutsu when the situation demands it.
He has only used ninjutsu a small number of times.
It is known that he has signed a contract with the Tortoise, as he summoned one at his first appearance in Naruto. This Tortoise is named Nin Kame.
He also possesses fire natured Chakra, displaying an extremely powerful fire ninja technique called Morning Peacock, which was sufficient to destroy a 30% Kisame clone in a single blast.
He is one of only three ninja known who possess the ability to open the Eight Celestial Gates, which empowers the body far beyond human norms in such areas as speed, healing and strength. However this technique is generally forbidden, as it is a double edged sword: the user actively harms themselves by using them. At even Genin level, the user can temporarily achieve power that surpasses even the strongest ninja: the Hokage for small amounts of time even if they are much weaker (and if they are as strong, the levels would be even higher) however if all eight gates open to achieve this power level, the user will die.
Guy also possesses a friendly rivalry with the Copy Ninja Kakashi, and they are always at an even number of wins / losses against each other at any one tie. Though Guy takes this rivalry very seriously, Kakashi does not.
It is through this rivalry that Guy displays that he is the only ninja who has created a fighting style that can counter the Sharingan, which involves predicting body movement through staring at the opponents feet.
It enabled him to save the lives of his fellow elite Jonin in a battle in which even Kakashi failed.
He said to Rock Lee "Your right all the effort is pointless... if you dont believe in yourself