Race: Shinigami
Height: 109 cm (3'7")
Rank: Lieutenant of the 11th Division
Relatives: Kenpachi Zaraki (adoptive father)

Yachiru is the shortest member of the Gotei 13. She became a shinigami without having taken the standard exams. She is the current Vice-Captain of the 11th division but her strength and powers thus far are unknown. She is also the president of the Shinigami's Women Society.

She first met Kenpachi as a baby after he had just killed a group of people. She instantly became drawn to him as she later said that it was as though Kenpachi had used blood to wash away the dark, hopeless, unforgiving world she lived in.