Reiji has refined manners. Although he might have a polite, sophisticated way of speaking (which the creators describe to be "butler-like"), his words tend to come with a biting edge. He values rules and demands that they are followed by others, no matter how strange they may be. Despite how rigid he may seem, he has a sense of humor. Reiji is portrayed as a no-nonsense character in the anime, yet Reiji's sprites in the games are often grinning. He is viewed as intelligent, yet pessimistic.