Baby Luigi is a minor character in the Cute Mario Bros. Series, only appearing twice. He made his debut in 'A Christmas Carol', and then in 'Mystery of the Stolen Hat'. In 'A Christmas Carol', Baby Luigi gave Baby Mario a fruitcake, causing him to hate Christmas. In 'Mystery of the Stolen Hat', He is seen getting his trademark green hat from a random Candyman and then taking off his diaper and old hat. He only appears in flashbacks.