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 outside of the Dream World will begin to act differently (excluding when the bros. face the giant Bowser in Dreamy Neo Bowser Castle, at which point Luigi is more confident, rather than scared), and Starlow will touch the L on 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 gimmick is similar to Giant Bowser in Mario & Luigi: Bowser's Inside Story.