User blog comment:Mangetsu20/Mangetsu Reviews: The Hueco Mundo Arc Part IV/@comment-1759748-20131024015247

Aizen, the best planner in a Shounen series since...Ever. I bet even if you take his ace in the hole, he'd be totally fine with it and just do something else to get the same end. He's the anime version of David Xanatos people. He's NOT to be taken lightly.