Madara Uchiha - Antagonis Character
Madara Uchiha (うちはマダラ, Uchiha Madara) was a legendary shinobi he Antagonis Character - who led the Uchiha clan prior to, and after the formation of Konohagakure. After allying with his rival, Hashirama Senju and the Senju clan, he and his clan helped in the founding of Konoha. After being reincarnated by Kabuto Yakushi during the Fourth Shinobi World War, he becomes one of the major antagonists in the series.
Madara was a very confident and prideful man, witnessed in his belittlement of Ōnoki both after his reincarnation and in the past, in his berating of Mei Terumī's technique, in the fact he uses relatively weaker attacks in his arsenal initially and works his way up to his more powerful techniques when the situation requires it and the fact he believes that using more powerful techniques more than once in a battle would be disgraceful. Conversely, he isn't above praising the abilities of others as he openly called both Mei and A's abilities an impressive offence, and Gaara and Ōnoki's manoeuvre an impressive defence, also commending the two being able to stop his first meteorite, as well as commending Naruto for countering his Wood Release attack. Having respect for Naruto, Madara tried to reason with him that the Eye of the Moon Plan was for the good of mankind. However he has also been shown to be spiteful, degrading Tsunade while comparing her to her grandfather, after saying he would kill her first out of the five Kage because she was a Senju. Madara is, however, an honest individual and is willing to admit when he is wrong as after Tsunade tag-teamed him with A, he admitted she was not weak at all. Madara is also willing to admit when someone is stronger than he is as he openly admitted that Hashirama could stop him during his battle with the five Kage. Madara, however, isn't above reprimanding others for recklessness or stupidity as he criticised Tsunade for attacking him without thinking of what the other Kage would do for treatment if she was killed and criticised the five Kage as a group for worrying too much about the flowers in his technique and not watching their backs. He also has a habit of referring to fighting as 'dancing'.
Madara has a dark sense of humour, as shown when he created multiple wood clones and surrounded each of the five Kage with five clones — thereby reversing the original five vs. one situation — and asked if they preferred the clones to use Susanoo or not, referred to incinerating the forest as "creating coal" after knocking the five Kage into it, and when asked by Naruto what had happened to the Kage, he stated that they were "not okay". He has a very jaded and emotionless approach towards the tragedies of war, to the point of light-heartedly joking about them, as seen from his cheer at having "destroyed the alliance's mind", which further demonstrates his knack for reversing the situations he finds himself in. Madara also believes power is something tangible that can be passed down through generations and that the will of a dead person cannot be inherited, as it is not tangible. While contesting Hashirama for the title of Hokage, Madara in his own way, was very loyal to Konohagakure, as he tried to force Iwagakure into serving Konoha, even after an alliance had been formed between the two villages. Despite his pride and confidence in his immense power, Madara is shown to be very cautious as he created a wood clone of himself at some point when the five Kage lost sight of him, in order to lessen the chances that they would catch him off guard.
As an Uchiha, Madara possesses an innate hatred for the Senju clan, as what is known as the Curse of Hatred, which dates back to the early days of the ninja world. This curse led him to oppose the truce fearing that his clan would be oppressed by them, and when Hashirama was selected to be Hokage instead of Madara, he defected from Konoha and attempted to attack the village after failing to replace him. His animosity towards Hashirama was particularly strong, going as far as to forbid Ōnoki from mentioning that name in front of him ever again. Nevertheless, Madara possesses a high level of respect and admiration for Hashirama as well as the Senju name as seen during the Fourth Shinobi World War where he would praise and curse Hashirama or other members of the clan in the same breath. Conversely, he also lamented that he would have taught Hashirama how to resurrect himself if he had known how much weaker the modern day shinobi would be compared to them. Madara was very competitive with his younger brother, Izuna, but Tobi also implies that Madara and Izuna were close as brothers.
Madara is seemingly treacherous by nature as, after the alliance with Iwagakure was made, he immediately betrayed Mū and Ōnoki, expecting them to follow Konohagakure's lead from then on. The Uchiha also believed Madara stole Izuna's eyes by force in order to escape blindness. He is also a battle-loving individual, commenting that he had not enjoyed this view in a long time while surveying the battlefield during the Fourth Shinobi World War. Relating to this, Madara enjoys a challenging fight and said that anything less than the five Kage against him would be inadequate. Madara is also very bold when it comes to battle, shown in his ready assault of an entire platoon of shinobi upon being attacked, despite being severely outnumbered. Despite his love of battle, Madara never loses his composure to excitement or fear in any of his battle situations. Also despite his love of battle, if Madara becomes bored with a fight, he will express disgust if his opponents try to force him to keep fighting. Madara is also something of a show off, as shown in his use of extremely powerful techniques in rapid succession, all the while, expressing satisfaction to having done it. He also purposely let himself get hit by Ōnoki's attack in order to show Hashirama's face on his chest to lower the morale of the Kage. Madara also showed the five Kage the true power of his perfect Susanoo by destroying an entire mountain range before administering the finishing blow. Due to the times he lived in, Madara believes it is natural for shinobi to spend their entire lives in battle. He also thinks that the world can't change from what it was in the past and believes that as such, mankind would be better served sleeping peacefully in an Infinite Tsukuyomi.
Madara has been described as being hostile and aggressive by nature as well as being very ambitious, the latter of which was seen during his rise to the position of clan leader as well as his desire to make his clan superior out of what Tobi claimed was Madara's great love for them. Madara had a sense of honour as, prior to their betrayal of him, he wanted to protect the Uchiha clan from the possibility of oppression by the Senju after failing to replace Hashirama as Hokage. Madara also views the tailed beasts as nothing more than masses of energy and tools too lacking in intelligence and sapience to think for themselves and as such, need to be "guided" by the Uchiha to learn their purpose and believes that they are but slaves to those with blessed eyes. Despite his aggressiveness, Madara has displayed restraint, withholding his full power when he doesn't need it, as he stated to the Third Tsuchikage that the reason that he went so easy on him when they fought in the past was because he didn't think an adult should fight seriously against a child, as well as expressing his wish to further explore the powers of his enhanced body but refusing to do so against a seriously injured Ōnoki. He is also somewhat of a perfectionist, as though Tobi claimed that the Ten-Tails' revival does not have to be perfect to advance the Eye of the Moon Plan, Madara noted this, along with his revival being different from the original plan, as acts of impatience and proceeded to correct the mistake.
As an old man, Madara seemed to be very bitter and disillusioned about reality, noticing that in this world someone always must be the "loser" so someone other can be the "winner", likely referring to his constant streak of failures against Hashirama Senju. This is what motivated him to wish to change the world via the Eye of the Moon Plan, and he would pass on this mindset to Obito.
http://naruto.wikia.com/wiki/Madara_Uchiha
Generally, the new Hokage is selected by the current Hokage upon their retirement, but if the old Hokage dies or is incapacitated before being able to do so, the Fire Daimyō will appoint a Hokage Candidate upon the recommendation of the Konoha council and the Fire Daimyō council. Afterwards, the candidate will need to be approved by the jōnin of the village to become officially Hokage.
After being approved, they move into the Hokage Residence to live in and have their faces carved out in the monument behind it. If the former Hokage is still alive, they will generally keep helping out, making the transition easier and more stable. The Hokage carry their title for life, even after retiring from active duty. The Hokage's office is located in the admin istrative section of the Academy. 
