Nero is a young boy, tall and with a well-built, athletic build. He has white hair and bright pale blue eyes. He tends to have a bad temper and explodes at the slightest provocation, even so he is someone who is very faithful and attentive to his loved ones. At times he is arrogant and cocky, he hates being called a 'deathweight' and strives to be someone strong and with firm values.