Board Thread:General Discussion/@comment-31283382-20131101162239/@comment-11477779-20131205073932

That was my point. They indicated what the hollow was BEFORE becoming an Arrancar. Once their masks are removed for the most part they ALL look like Vasto Lorde class hollows although they can greatly differ in power individually. Perhaps they can still evolve and what would change is the appearance of their resurrecion. The closer you are to a Vasto Lorde, the less you change physically.