In chapter 1 of bleach you can see Hirako on it. In chapter 25, pg 17 After grand fishers defeat I'm assuming they went into the hollow world. Now if I'm right their is a Hollow which has some of his mask removed tending to his wounds I dunno but I think the guy with the turban is Deroy. Look at the human features and the hole in the chest, not to mention his teeth. This proves that Arrankar are not all Vastrodes, but some are actually common hollows. They also have a medic? So it seems they have nearly all what Soul Society has. And if those 2 aren't Deroy and another one we've seen could they possibly be the Vastrodes we were told about? What are your thoughts?