Board Thread:General Discussion/@comment-9732657-20130519011726/@comment-9732657-20130520192145

Kamikaze839 wrote: It's at least an Experimental Hollow made by Aizen, based off a dead Shinigami's soul, so that makes it more akin to Vizard than an Arrancar. Did you read what I had to say about him being based on a shinigami? If White's (un)life ended with Soul Suicide then he couldn't have simply been based on one, he had to actually be one, or possess the powers of one at some point in his life. If he was a genuine hollow with the spirit structure of a shinigami he would be no different from an Arrancar aside from his mask and mental corruption.

In my opinion White was something much closer to Tousen's Ressurecion form and Ichigo's Mugetsu form in function than Ichigo's berserker form in that he wasn't just a hollow with a zanpaktou, he was a being that manifested its powers and appearance in his form, a fully released entity.