Retsu Unohana

Unohana has the appearance of a slender and very youthful woman with blue eyes and black hair. She wears the standard Shinigami captain shihakushō apart from using an obi instead of the normal sash, which hides her well-endowed bosom. Her hair is long and is always worn as a large braid down the front of her body.

Unlike most Shinigami who carry their Zanpakutō in their sash, Unohana has a large string attached to the sheath of her Zanpakutō and carries it over her shoulder, or has her lieutenant, Isane Kotetsu, carry it for her whenever they are together on the battlefield.

Unohana has a gentle and warm personality that augments her appearance. Unohana is a soft-spoken, polite, and caring woman who uses honorifics when addressing everyone, including her subordinates and the enemy. She rarely shows any signs of panic or distress, and has a great sense of duty. Despite her sense of duty, she will also heal almost anybody around her. With her grace and kind manners, she lets others know quietly that while she may be soft, she is not to be taken lightly. Despite her gentle nature, several members of the Eleventh Division and even her fellow Captains fear her.

At some point in the past, she named herself Yachiru Unohana and was known as the most diabolical criminal to ever exist in Soul Society. Genryūsai Shigekuni Yamamoto sought her out and she joined him, becoming one of the founding members of the Gotei 13. Unohana laid the foundations of what would be known as the 11th Division and became its first captain, as well as the first Kenpachi. During this time, Unohana was taught medical techniques by Tenjirō Kirinji; she sought this knowledge in order to prolong fights.