Mirror

A Mirror is a reflective surface that displays the reverse image of what is in front of it. As such, mirrors are typically used for personal grooming. However, mirrors have appeared as specialized objects in two games.

Luigi's Mansion


Mirrors also appear in Luigi's Mansion, where they serve a very unique purpose. If Luigi examines a mirror with his Game Boy Horror, the green-clad plumber will be instantly warped to the Foyer, the main entrance of Luigi's Mansion. Every mirror in the mansion, except the room-length mirror in the Mirror Room, is magically connected to the mirror in the Foyer. Additionally, if Luigi examines the Foyer mirror, he will simply warp to the Foyer (i.e. he will remain in the same place).

These magical mirrors can be used to create short-cuts when necessary instead of walking through the entire mansion, return to the main entrance if lost in the mansion, or even, if needed, escape powerful enemies if Luigi can examine the mirror fast enough before being attacked. The located mirror is the only way to exit the Sealed Room, as the door is sealed up and Luigi cannot climb up the chimney, the entrance to the room. Some mirrors are covered with a piece of cloth, meaning Luigi has to remove the cloth with the Poltergust 3000 before he can use the mirror.

Finally, one mirror in the mansion serves its regular purpose by showing the reflection of a wall switch Luigi needs to activate in the Storage Room, while another one reflects certain ghosts which can't be seen normally.

Wario World
In Wario World, a level named Mirror Mansion is full of mirrors, forcing the player to have to "act opposite" as only Wario's reflection is seen. This also blocks enemies, etc.

Super Mario 64 DS
In Super Mario 64 DS, Mario entered a room containing a large mirror in which he fought King Boo. To defeat the ghost leader, Mario had to follow the Big Boo's movements in the arena's mirrors then stomp him when he came too close. Ultimately, Mario saved his brother from the Boo.

Also in the game, Luigi has the power to run through mirrors when getting the invisible flower.

Yoshi's Island DS
In Yoshi's Island DS, when Yoshi fights in the battle against Hector the Reflector, the Nintendo DS's touch screen acts like a mirror, which means Yoshi can see Hector, as Hector was invisible otherwise. Also, each time Hector got hurt, Hector will send chairs and potted flowers to destroy parts of the mirror, effectivily reducing how Yoshi could see Hector. Also this is the only time the player can see an Invisighoul.

Trivia

 * Unlike other games, where hints about certain features are provided by characters or signs, in Luigi's Mansion, the player is never informed that the mirrors can be used to warp to the Foyer. The only way for a player to figure this out is to have Luigi experiment with the Game Boy Horror and accidentally examine a mirror.


 * Originally, a line of coins led to the wall switch in the Storage Room in Luigi's Mansion. Later in the game's development, programmers decided to remove the trail of coins in favor of the reflective mirror.


 * An unlockable Mirror Mode of the courses appears in Mario Kart: Double Dash!! and Mario Kart DS. This unlockable version has the courses all reversed, so if the player had to turn left in the normal courses, in the Mirror Mode the player had to turn right.