Mario and Luigi
As a Nintendo mascot, Mario is the most famous character in the history of video games, and his representation is generally associated with video games. Mario video games in total sold more than 210 million units, making the Mario series the best-selling game series of all time.
Luigi is most often described as Mario’s younger brother. In games where Luigi is a child, he is shown as a terrible crybaby, but friendly and cheerful, and a little more courageous than an adult.