As powerful as Ichigo Kurosaki has become, there are still several Bleach characters who could defeat him in battle.

Although Ichigo Kurosaki often relies on his allies to help him defeat powerful opponents, he's taken out plenty of Bleach ...

It may appear to be simply another power-up ... within him. Ichigo's Horn of Salvation ability in Bleach is usually viewed as merely another transformation in a series full of them.