The Mario Silhouette

The Mario Silhouette is the name given to a shadow version of Mario that can appear in Super Mario 64. It is described as a black, textureless Mario that randomly roams the map. It most commonly appears in Princess Peach's Castle. It usually runs away from the player when spotted. If it is cornered, the game will crash. If it is attacked, the player will suddenly be warped into an area known as The Labyrinth, an endless maze with no reported end. It is currently unknown why this happens.