User blog comment:Captain Brooks/My thoughts on Aizen sama./@comment-1454424-20100329072836

Kubo did say he wouldn't do a backstory on Aizen. He's reasoning was that Aizen would lose some of his mystic if his background was explained. Further more, Aizen's english voice actor said that because so little is known about Aizen - fans have the "where did this guy come from" feel.

However, Kubo's made that "no backstory for Aizen" years ago. Since then we have had the Turn back the pendulum arc that has filled in some of Aizen's history. In addition, Barragan through his flashback filled in more holes in Aizen's past. I guess at this point it really a matter of what you mean by "backstory". I don't Kubo is going to reveal anything about Aizen's childhood, his parents or anything like that. However, Kubo will mostly likely reveal more history through flashbacks of other characters and get Aizen to drop hints about his past/what makes him who he is.

However, if anyone is expecting Aizen to get some sort of redemption through his backstory/history should probably not hold their breath. Even if Aizen got a multi-volume flashback chapters detailing everything he ever did before Shinji made him his vice-captain, most likely all we'll ever find is that Aizen hated the confines his Shinigami body placed on his powers and wanted to transcend above it. He does not appear to have any particular hatred of Shinigami or Soul Society as such. Sharing the same scorn of hollows that even Vizards such as Love have shown. In short, he's no Tosen.

In many ways Aizen's not very different from many RL researchers, as explained by the following comic ^.^

http://www.phdcomics.com/comics/archive.php?comicid=778