Matsuda is the youngest and inexperienced in the investigation headquarters. Everyone, including L, tends to underestimate Matsuda's powers. Despite this, Matsuda is always ready to risk his life for the investigation. Matsuda has black hair and brown eyes. His hair hangs over his ears, and his bangs hang predominantly over his right eye. After the time skip, his hair became shorter, although there was more of it on his forehead. Likes to follow trends, dislikes - overly hardworking people.