Kugo Ginjo may not be considered as iconic of a character as Ulquiorra Cifer, but they both mark important points in Ichigo ...

Until he reveals his new Bankai, there's no telling what the limits of Ichigo's powers are. He also has his merged hollow form, but it's unlikely that a battle against Aizen would trigger this power.

Aizen is perceived as the master orchestrator behind everything in Bleach, and this theory explains how that might be true.

In Ichigo's backstory, Masaki Kurosaki fights against White, a Hollow Aizen created. She kills it but only destroys one horn, and the other is left intact. That remaining piece then becomes ...