List of Luigi sightings in New Super Luigi U

In every course of New Super Luigi U is a picture of Luigi hidden, whether it be a sprite, a image in a wall, or otherwise.

Waddlewing Warning!

 * On top of the New Super Luigi U sign in the beginning of the course is an 8-bit sprite of Luigi standing.

Crooked Cavern

 * Right before the normal exit is an 8-bit Luigi sprite under the stairs of Brick Blocks.

Piranha Heights

 * The room that contains the third Star Coin has a large climbable statue of an 8-bit Luigi made out of colored blocks.

Piranha Gardens

 * There is a large Luigi-shaped hedge near the first Hammer Bro. in the level.

The Great Geysers

 * Behind the course's starting point is a series of large blocks with lines made to resemble Luigi's head.

Dancing Blocks, Poison Swamp

 * A Luigi sprite can be seen clinging to the top of the secret flagpole.