Board Thread:Improvements and Issues/@comment-15519592-20150125090311/@comment-44061-20150622125930

He doesnt have to mention on the arrancar page it states "Arrancar are a group of Hollows that gained similar powers to that of a Shinigami by removing their masks. The individuals that Aizen turned into Arrancar using the Hōgyoku possess powers far beyond those of previous Arrancar". This being stated in the Bleach Character Book MASKED on page 130. It is then further detailed here: http://bleach.wikia.com/wiki/Arrancar#Creation. Therefore this isnt a argument. Whether any hollow is capable of it isnt the issue thats not something anyone knows nor are the circumstances for why a hollow would remove their masks. Maybe if you had payed more attention yourself you would have read that part of the manga too.