User blog comment:PcRetro/So are Sternritter Human or not?/@comment-1387259-20131006215546

Well, there's a few ways to answer this one. Quincy are, in a way, a form of Human, however, they can also be Souls by race (i.e. dead Humans). BG9 seems to be an anomaly at the moment. He did say he has never been alive/never breathed, and many people seem to draw the conclusion that he's some kind of machine. However, this could mean a few things, as maybe he is simply using the robotics to allow him to live, and is unable to live without them. If he is a complete robot, we have seen that Yhwach is able to give Quincy powers to Arrancar (Friegen and Ebern), so we can't exactly rule out his ability to give them to a machine.