Byakuya Kuchiki is the 28th head of the Kuchiki Clan, one of the four great noble clans in Soul Society. He is also the captain of the 6th Division in the Gotei 13. His previous lieutenant was Ginjirō Shirogane and his current lieutenant is Renji Abarai. 

Byakuya has slate gray eyes and long black hair, which he keeps up in intricate white headpieces called kenseikan, which symbolize his nobility as the head of the Kuchiki Clan, wearing three on top of his head and another two on the right side. In addition to the standard captain uniform, he wears a white scarf, which is woven by the master weaver Tsujishirō Kuroemon III. The scarf is made from Ginpaku Kazahana no Uzuginu and is a family heirloom, having been handed down from generation to generation and given to each head of the Kuchiki Clan. The scarf alone is worth ten mansions in the Seireitei. He wears fingerless white tekkō which only cover the back of his hands.