Zenitsu is a 16-year-old young man, with a height of 1.65, his favorite food is expensive and sweet foods, his favorite color is green and his hair is blonde with orange streaks, he is usually scared of demons, but when he sleeps he is brave and strong even though he doesn't remember it later, he is shy with women even though he is usually a bore and also with men, he is a demon slayer and uses thunder breathing which was taught to him by his now dead teacher who was an old hashira.