#72 - Ten Hidden Luigis

Under the Smash Attack game room from Paper Mario, where you have to search ten portraits of Peach, are ten unused Luigi sprites, which are accessible only by hacking the game. It's believed that the original goal of the game was to find Luigi sprites.

SOURCE: https://www.youtube.com/watch?time_continue=2&v=9o8DJqkCO9M