Baby Luigi is the baby form of Luigi. He wears green clothes, much like Luigi. He is Mario's brother Luigi in baby form . He was first introduced alongside Baby Mario in Super Mario World 2: Yoshi's Island, in which the aim of the game was to rescue him from Baby Bowser. |first = Super Mario World 2: Yoshi's Island (1995)
|games = poem Super Mario World 2: Yoshi's Island Mario Kart: Double Dash!! Mario Superstar Baseball Mario & Luigi: Partners in Time Yoshi Touch & Go Yoshi's Island DS Mario Kart Wii Mario Super Sluggers </poem> |gender = Male |homeland = Mushroom Kingdom |kindred = Baby Mario (brother) |race = Human |forms = |revenue = Charles Martinet (2003-present)}}
Baby Luigi appeared in this game alongside Mario, Luigi and Baby Mario in which combined with Luigi could achieve combo attacks. He always seemed to find it enjoyable (or hilarious) to see his older self get conked on the head.
Baby Luigi first appeared as a playable character in Mario Kart: Double Dash!! as the partner of Baby Mario. His Car is the Green Pram, which is a lightweight car and his special item is the Chain Chomp He was absent from Mario Kart DS, but returns in Mario Kart Wii. Adding to his stroller car, he also drives a motorbike
Baby Luigi's first appearance was a change to the story of the Mario Bros. Although many games depict Luigi as the younger brother, Yoshi's Island seems to show that the brothers are in fact twins. This has not been explained in any of the games.