Luigi is Mario's younger but taller twin brother, the secondary protagonist of the Super Mario franchise, and the main protagonist of the Luigi's Mansion series.
Luigi first appeared in Mario Bros., a 1983 platform game, in which he was originally designed as a palette swap of Mario with a green color scheme; Luigi has since appeared in multiple games and other media throughout the Mario franchise, in which he developed a personality and style of his own.
Throughout his life, he has lived in Mario's shadow, developing both cowardly and heroic tendencies. Despite this, Luigi has helped and fought alongside his brother on many occasions. Mario Bros. for the Game & Watch marks his first appearance, in which he is an exact copy of Mario.
Luigi is kind but can be a bit nervous, especially around ghosts. However, his abilities are on par with Mario's, so when these brothers team up, there's nothing they can't achieve.
Luigi (JPJapanese: ルイージRomaji: Ruīji) is Mario's younger but taller and thinner twin brother. He made his debut in the Game & Watch game Mario Bros., subsequently appearing in the original arcade game Mario Bros. game as the second player.
Luigi is a major protagonist in the Super Mario franchise, and as such, he has appeared in several forms of media, including video games, comic books, and animation.
Luigi is Mario's younger twin brother and the secondary protagonist of the Mario franchise. Throughout his life, he has lived in Mario's shadow, developing both cowardly and heroic tendencies.
It marks the second time where Luigi is the main protagonist, with Mario playing a supporting role, the first being Mario is Missing!. The game marks the debuts of King Boo, Luigi's main antagonist, as well as Professor E. Gadd, a major supporting character in the series.