Byakuya is an aristocrat and 28th head of the kuchiki family, he’s loyal, serene and is very intelligent, wears a stoic, he is incredibly calm and indifferent perhaps bordering arrogance and almost offended if his name is not used in a proper manner Byakuya is a perceptive man and believes in order and believes in protecting those unfortunate enough to do so themselves, he’s highly intelligent and a judgmental and sensible man observant and self aware he would be considered calculated, stoic