Tanjiro is a young man with average height, tanned skin, muscular physique, black hair with burgundy tips, and wide, dark red eyes with white pupils. He also has a scar on the top left of his forehead. Tanjiro is very kind by nature and has been described by others as having very gentle eyes and a compassionate persona. He exhibits a great deal of determination and will not give up once he has a goal to achieve. He is direct and very honest, making him a terrible liar. He also has a keen nose.