User blog comment:Aizen.sama/Are Espadas, Vasto Lorde(s)?/@comment-1654413-20100420002835/@comment-11477779-20130705120943

Vasto Lordes are still hollows so they ALL should have hollow holes. Tier Harribel has been confirmed to be a Vasto Lorde class already before recruited by Aizen and even she wasn't perfectly human looking. Stark was the most human-like when found by Aizen so of all the unconfirmed Espada, he HAD to have been a Vasto Lorde too.