User blog comment:Kamikaze839/Kami's Character Analysis 2: Baraggan Louisenbairn/@comment-44061-20140122170741

I would actually go a step further because the basic insinuation is that if his released form is so close to his form when he meant Aizen it would stand to reason that he was a naturally occurring arrancar. Vasto Lorde at one point no doubt, but considering the basic lack of change the fact that he was so powerful he was the God-King of Hueco Mundo. Then again it could be that he was simply a hugely powerful vasto lorde that gained power more then anything from the arrancarfication. Seeing as there is no sign of respira or his time manipulation abilities upon aizen's arrival. Other then that i agree completely with this analysis.