User blog comment:Morgan silve/Aizen vs Kariya, who would win?/@comment-10829693-20130614020454

Certainly Aizen. Kariya was completely overpowered when Ichigo lost his control over his inner hollow. Aizen defeated Ichigo in his masked form almost effortlessly. I doubt Kariya can even take on one of Aizen's Espadas without getting himself seriously injured in the process. Ulquiorra can take him easily with his Resurrección. The point is that Kariya is powerless compared to Aizen.