Talk:Meta VS Carolina/@comment-26510892-20160729195049/@comment-3035019-20160729195713

The Bankai form that you've seen is his former Bankai power-up, which he accesses by releasing his sword's power. This grants him quite a buff in every aspect. However, it has become obsolete. After his battle with Aizen, he lost all of his Shinigami powers, but he eventually got them back a lot more powerful.

His modern version still has no Bankai (or maybe he does, I haven't kept up with the manga), but his Shikai (first release state of his sword) is actually stronger than his old Bankai.