Byakuya is 185cm (6’1”) and weighs around 68kg, with a tall, slender build and strikingly long legs. He has pale skin, lapis blue eyes with noticeably long eyelashes, and has chin-length blonde canary yellow hair. He wears a black suit jacket over a white shirt and lapis blue crossover tie. He also wears black dress pants accessorized with a black belt. Byakuya is a cold and self-centered person who is very reserved. He is not interested in co-operating with others.