User blog comment:Aizen.sama/Are Espadas, Vasto Lorde(s)?/@comment-2017812-20100420213559

but the hogyoku was used on the vizards by kisuke back when he was a captain and they have alot more xp using the hollow powers and even if tousen did have easier access to it, you have to think that the vizards have had their hollow powers for over 100 years