Giant Luigi

Giant Luigi is a form in Mario & Luigi: Dream Team that Dreamy Luigi takes in the Dream World after uniting with many Luiginoids. When Dreamy Luigi is in a state of peril, the sleeping Luigi in the Real World will begin to act differently, and Starlow will touch the L part of Luigi's cap, causing a light to grow there. As this happens, Luiginoids will join with Dreamy Luigi, causing him to grow in proportion into a giant state, allowing Luigi to take on the boss threatening him. This is gimmick is similar to Giant Bowser in Mario & Luigi: Bowser's Inside Story.