Baby Luigi

Baby Luigi is the infant form of Luigi. He is brothers with Baby Mario.

Super Mario World 2: Yoshi's Island
“Uh-oh, Baby Luigi time!” —Baby Luigi, Mario Kart: Double Dash!!

Back when Baby Luigi was being delivered to his parents, Kamek the Evil Magikoopa stole him. While Baby Mario fell on Yoshi's Island, right on top of Yoshi,They started a big adventure!