Reception
IGN commented that the plot twist in the story and the truth about Aizen was "fascinating and interesting" but also criticized it, saying his Zanpakuto's power was "far-fetched"
[7] and overpowered, Aizen didn't have any flaws and that his betrayal was "too planned out to be believable." Despite this, the change in mood accompanying Aizen's revelation as a villain was also praised; IGN praised the animators' job at "giving his face this evil thing about it" without changing anything about the animation itself, citing that "the Aizen that we first knew was the nicest guy ever, he looked it, and now this Aizen actually looks like the most evil jerk we've ever seen."
[8] Carl Kimlinger from
Anime News Network comments that Aizen's revelation as an antagonist is "brutally unpredictable." He notes the violence from that part to be frustrating but in the same time satisfying, praising the large number of revelations. Aizen was additionally noted to have a remarkable development in his introduction as a villain with Kimlinger wondering "If only all villain grandstandings were so thrilling".
[9] Theron Martin from the same site noted that this scene makes the anime deserve credits for "the biggest “I am a total bastard” moments in anime history."
[10] Mania Entertainment's Bryce Coulter noted that such episode "makes you [viewers] want to hate Aizen" due to how he controlled the character's actions in previous episodes and how he now easily defeats most of them.
[11] Aizen's English voice actor,
Kyle Hebert, describes Aizen as a "mysterious, calm, cool character" and that gives an air of "where does this guy come from?".
[12]