Looks: Prior to his departure from konoha, he appeared as a mild-featured man with brown scholarly hair enhanced by square glasses. He wore the standard ninja uniform with a flack jacket. However, during his ascent to sunagakure, he removed his glasses and swept his hand through his hair, revealing menacing eyes and a very different hairstyle; his hair is now swept back, with a strand hanging in his face. As he had previously revealed to jiraiya, the Aizen they all knew never existed and this would seem to be a visual representation of that claim.
Personality:Despite his current villainous status and former position of authority, Aizen is a surprisingly polite, soft-spoken intellectual, often addressing his subordinates by their given names. He rarely shows any sign of alarm or distress and often has entire situations planned out well in advance. Whenever confronted, Aizen is casual and uncaring, attempting to draw out a conversation and make small talk, which often infuriates those he is talking to.
Aizen initially appeared to be a very kind, well-respected captain and was looked up to by many, especially his Lieutenant Momo Hinamori. However, this was just a mask to disguise his manipulative and very dangerous nature. In truth, he cares very little for his underlings (both past and present), and is willing to use almost everyone around him as pawns to achieve his means. In his own words, Aizen claims to be unaffected by any form of morals or ethics, as he views them as mere restrictions on his potential. He is, therefore, willing to stop at nothing to further his selfish ambitions, including manipulating or killing anyone if he deems it to be necessary. He is fond of long, complicated, and somewhat convoluted plots, and frequently appears to toy with his underlings for amusement. Unlike most of the other , Aizen lacks genuine compassion and honor.
To date, the equally manipulative Gin Ichimaru is the only person who seems to be able to see through Aizen's manipulation. Ichimaru has also shown that he has some sense of Aizen's emotions and feelings, correctly identifying that Aizen was enjoying the invasion of Ichigo and his friends and their successes within sunagakure as well as picking-up on the fact that Aizen had registered the arrival of Hinamori in battle of Fake Karakura Town and was surprised by it.
Village of Birth: Konoha Village of Alliance: Suna
Ninja Rank: Kage Specialty: Genjutsu, taijutsu, kenjutsu Elements:
History: At an unknown point in the past, Aizen became part of 5th Division under Captain Minato namizake. He invested himself in the research and creation of genjutsu techniques even before Kisuke Urahara. To this end, he sacrificed hundreds of ninja and hundreds of citizens who bore genjutsu talents to his own genjutsu abilities. But it was not satisfied with this.
The very next night, Aizen saw Gin Ichimaru killing the 3rd seat of their division, and informed him that he was impressed by his skill. Aizen then asked him how he found the fight, to which Gin stated he found it pathetic.
9 months later, Minato and Aizen were walking around konoha when they came across team kakashi. While Kakashi once again engaged in a childish fight and argument with obito, Aizen asked gin if he had heard the news to which gin told him he hadn't. Minato proceeded to take up the tale and tell gin about the series of strange deaths that had taken place in land of fire. Shinji also informed him that the 9th Division had been sent to handle the investigation.
At some point during their captaincy, Aizen, Gin and Tōsen, secretly visited The third kazekage, Kage of sunagakure. He met up with sasori engaged in a light conversation and he asked sasori to help with the assassination of the third kazekage. He was ;ater killed.
Aizen became aware of the existence of naruto uzumaki when he was born. Understanding the significance of his birth, he had decided to aid his development for his plans. To this end, he had began to manipulate things stationed.
Aizen and gin then betray konoha by attacking a jounin. Aizen then draws his sword and attacks Shikaku in the kage mansion during the attack of the second nine-tails , but shikaku is able to use shadow possession in time to momentarily stop Aizen's attack leaving only his right arm damaged. Aizen applauds his ability to dodge and expresses happiness with the improvements in his skill since he was one of Aizen's subordinates. Aizen tells shikaku that he doesn't want things to be harder, because he finds it difficult to hold back his strength. He states that as shikaku former superior officer that he finds it unbearable for a subordinate to die.
After defeating shikaku, he tried to kill an uchiha, surprised that he still lived through it. Surprised that the procedure didn't kill the young uchiha, and having no further use for her, he orders Gin to kill him as he prepares to leave. After killing the boy, all of konoha arrived in order to try and fight, noting his skill with genjutsu he could take an entire army. Aizen smirks and merges with the ground while uttering his last words to his former comrades. Gin used body flicker to escape.
While leaving, Aizen removes his glasses and change his hair style by combing a hand through it. His glasses evaporate into dust. He then proceeds to announce his goal to stand atop of the world in the heavens and take the place of the absent gods, something no one has ever done before. Before finally descending into the portal created by the Menos arrival, he bids farewell to all of the ninja present and then tells Ichigo uchiha that he was very interesting for a uchiha.
Aizen calls the sunarians to a meeting and invites them to have some tea. As they are having their tea, Aizen reveals to them the presence of Ichigo uchiha and daemon. When the Espada start to dismiss them off-hand, he warns them not to underestimate the dup, revealing to them their exploits in akatsuki. At this point, zoro begins to leave, stating that he is going to go eradicate the threat in Aizen's name. However, Aizen stops him and resorts to intimidating zoro with his Reiatsu when the latter hesitates to back down, bringing zoro to his knees. He then tells the other suna to return to their palaces and wait patiently. He also tells them not to be overconfident but not to be afraid either because as long as they are with him, no one can defeat them.
But they were defeated and at ichigo's mercy for not heading his words and he joined sunagakure.
Gin laughed at the village and decided to visit land of lightning, he has yet to return some say he died others believe he betrayed. Aizen believes gin is doing as he should...