Bleach became one of the world's most popular anime series because it has a lot of action and plenty of fun characters. Kenpachi Zaraki is the Captain of the 11th Division, which means that he is one of the strongest Soul Reapers within the Soul Society. He has always fought with overwhelming force, and he has become even stronger now that he has finally connected with his Zanpakuto. His strength is so vast that hardly anyone can beat him, but there are a few characters who can.
Source：https://www.cbr.com/bleach-characters-strong-enough-to-beat-kenpachi-zaraki-ranked/
