Board Thread:General Discussion/@comment-24996837-20140531000307/@comment-24996837-20140531035803

You do have good points. Their personalities are indeed different. How they fight (or not fight) is very different. And, your right, Aizen joining the Sternritters does make no sense. But this is Aizen we are talking about. The king trickster probably has a plethora of tools and strategies, even without Kyouka Suigetsu, which was destroyed. He probably has changed his game plan to get to the Soul King. Wait for the Wandenreich to do all the hard work for him, and then make his move. He manipulated Yhwach with some spell when they first met. Whose to say he's not manipulating all of them? Hiding within their ranks would be the ideal strategy for Aizen at this point.

And besides, this is just a theory. I'm not saying that this is how Aizen will return (if at all), I'm just putting the idea out there for discussion.