Luigi (/luˈiːdʒi/ ; Japanese: ルイージ, romanized: Ruīji) is a character created by Japanese video game designer Shigeru Miyamoto. Part of Nintendo's Mario franchise, he is a kind-hearted, cowardly Italian plumber, and the younger fraternal twin brother and sidekick of Mario. Like his brother, Luigi's distinctive characteristics include his large nose and mustache, overalls, green hat, and high-pitched, exaggerated Italian accent.
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. As his role in the Mario franchise progressed, Luigi evolved into a physically distinct character, and became the main protagonist of Mario is Missing! and the Luigi's Mansion series. Charles Martinet voiced Luigi from 1992 to 2023, when he was succeeded by Kevin Afghani.