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.

Piranha Heights

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

The Great Geysers

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