So far (atleast as far as chapter 399) it hasn't been comfirmed yet.
Well Aizen did say when it was revealed when some he new had a hollow mask that he is to good for a hollow mask, he goes on to say that only a weakling would need one.
Renji? No, he isn't part hollow so he can't get a hollow mask.
Aizen will die later on the manga Shinji the leader of the Vizards try's to kill Aizen but fails trying to.Ichigo's dad and Urahara And Youruichi almost took down aizen but he turned into a hollow before he did.
No. He, along with Kaname Tosen and Sosuke Aizen are all former Shinigami.
Ichigo doesn't have his hollow mask in Shattered Blade but he does have it in Versus Crusade
you have to kill your hollow inside of your mind
No, She is a Human.
An inner hollow? Probably not. He wasn't one of Aizen's experiments, and he became a Shinigami normally, unlike Ichigo. So I seriously doubt it.
The Espada , Spanish for "Sword", Japanese for "Ten Blades") are the top-rankedArrancarr in Sosuke Aizen's army of Hollow-Shinigami hybrids, are the most powerful Hollows under Aizen's command, and are the main rivals of the Gotei 13.
The YouTube video channel contains several tutorials showing how to make a hollow mask from papier mache. The eHow and Instructables websites also give information on how to do this.
i think rangiku because even though he went to the hollow realme aizen may of threated him so no he loves rangiku. plus she's the only one he has feelings for and aizen just uses gin for his own game.
yes, only if ichigo's inner hollw takes control and turns into his full hollow form like when he fought Ulquiorra
It's simply called a Hollow mask.