Sōsuke Aizen

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Sōsuke Aizen
Blood typeUnknown
BirthdayMay 29
Height186cm (6'1")
Weight74 kg (163 lbs)
ZanpakutoKyōka Suigetsu
Occupation(s)Previous 5th Division Captain
Leader of the Arrancar Army
Subordinate(s)Gin Ichimaru and previously Momo Hinamori
SeiyūShō Hayami
Voice actor(s)Kyle Hebert (english)
Raúl Llorens(spanish)
Ricardo Mendoza(latin american)
First AppearanceVolume 9, Chapter 79
Episode 23

Sōsuke Aizen is the former captain of the 5th Division in the Gotei 13 and the primary antagonist of Bleach. His lieutenant was initially Gin Ichimaru, who was succeeded by Momo Hinamori after the aforementioned's promotion to 3rd Division captain. After defecting from Soul Society, he and his accomplices Gin and 7th Division captain Kaname Tōsen migrated to Hueco Mundo where he raised an army of arrancars using the Hōgyoku he stole from Kisuke Urahara. Aizen has often been revered by fans and critics of Bleach as one of the best, most unexpected antagonists in anime and manga.


Aizen is an average sized, clean shaven man with dark brown hair and eyes. While he resided in Soul Society, Aizen had his hair covering much of his forehead and wore glasses, making him appear harmless. He regularly wore his shihakusho with his division's emblem on his shoulder while serving as 5th Division lieutenant, and later on with a white haori when serving as 5th Division captain. Upon defecting from Soul Society, he styles his hair back and stops wearing his glasses, giving him a much more moderate appearance.

Powers & Abilities

  • High Intellect: This is arguably the most fearsome thing about Aizen. He is versatile in battle tactics, history, strategy, tactics of Soul Society, and has a well versed knowledge of information unknown to most, such as the existence of the ōken, as well as the method on how to make/obtain one. He has created Hollows and Arrancar to do his work without him directly doing it, and thus avoiding any direct suspicion to himself, he also did this with the aid of his Zanpakutō's illusionary capabilities. For 110 years he has been conducting dangerous experiments that manipulate or change Spirit Particles. However his most prevalent - and useful - experiments lie within that of the process of Hollowification of a Shinigami, and the Shinigamification of hollows. After the events during the Turn Back the Pendulum Arc it is speculated to have happened once since, with Tōsen Kaname being transformed into a Visored type entity. He also has a great knowledge of the Hōgyoku and claims to know more about it than it's creator, Kisuke Urahara, even to the extent of him knowing how to destroy it. During his battle with Shinji Hirako he was quickly able to deduce the power of his Zanpakutō, figuring out the optical illusion it creates, thus allowing him to counter it's effects. He was also able to effectively deduce the restrictions, advantages and the true power of the Hōgyoku through trial and error alone.
Last edited by on 20 January 2013 at 20:47
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