@Daz:
Gillians are just the giant menos with the long noses, the ones that Superchunky (ahahaha, I just remembered what a waste that was) barfed up. Grimmjows cronies had clearly evolved beyond that, as they had regained their individuality, and intelligence.
–- Update From New Post Merge ---
Nonono, see, it was quincy powers pretending to be shinigami powers and supressing his true hollow-based shinigami powers. Or something.
That's what Juhabach wants Ichigo to think, or maybe it's according to Aizen's plan, or Shu-chan stabbed Ichigo before he left and his new ability is to inject any memory, or it's a combination of them all. Point is, Ichigo is going to need one more power-up to defeat the final boss, so there's going to be at least one more explanation. I have come up with a few.
-Ichigo's Mom was also a Vastolorde that Aizen changed into a person early on, and Tsukishima changed everyone's memories to make them think she was a Quincy, thus she learned how to be a Quincy. Ichigo must embrace his hollow side a second time, despite having done that already. After winning, he finds out that he is not only all of the things, but he is in fact non of them at the same time. Hollow cancels Quincy while Shinigami cancels human. He is nothing, and because there are no backgrounds, he is everywhere.
-Ichigo's soul has cycled through many famous fighters throughout history, and he must defeat them since they are imprinted into his soul.
-Ichigo must catch all the Zanpaktou spirits, but the catch is he only has 24 hours to catch em all before more pop up, after catching them all he has to become the very best like no one ever was. When he becomes the best, he shall have the ultimate bankai.
-Ichigo's soul has cycled through numerous Mangas, Besides being Hollow, Shinigami, Fullbringer, Quincy, and Human, he has also been Pirate King, Hokage, Ripple User, Stand User, Spirit Detective, Alchemist, Numerous Magical Girls, Homunculus, Admiral, Yonkou, Shikibukai, Demon, Angel, Nazi Cyborg, Several Martial Artists, Vampire, Batosi, God of games, Witch, Soul Eater, werewolf, and Gary mother effen Oak.
-When were you under the impression I wasn't Ichigo