Maki Ichinose

Maki Ichinose former member of the 11th Division, under the former captain that Kenpachi Zaraki defeated and replaced.

He helped Kariya and the other Bounts by infiltrating Soul Society and provoking Mayuri Kurotsuchi into helping the Bounts enter. He is severely wounded by Kenpachi Zaraki during their duel, breaking his sword in the process. When he returns to question Kariya's motives and threatens him to help better the Soul Society, he is stabbed and tossed away by Kariya. What's left of his sword is destroyed when it inadvertently saves Ichigo from one of Kariya's lightning attacks, acting as a lightning rod.

Despite not belonging or having a Shinigami Rank in Gotei 13, Maki was nearly a captain-level fighter. This is proven when he fights on equal footing with Ichigo Kurosaki or when he crosses swords with Toshiro Hitsugaya; neither him or Maki were able to push each other back.