Mario must enter the door with no number or star and follow King Boo. Using the power floor Mario must float up to the platform to confront King Boo. Once he defeats King Boo using the reflection in the mirror he will get the Luigi key. This key unlocks Luigi as a playable character.
It is impossible
the three keys unlock mario,luigi and wario
this answer is really simple all you have to do is win alot of times and it will do the rest for you. your welcome
in the middle of peaches castle unlock the room and go upstares and master the game with the clocks. i think
You can not unlock Luigi in super Mario 64 without hacks, but he is playable in super Mario 64 DS
You be Luigi in New super Mario bros DS by holding L + R while choosing any save file.
press R on the ds and B at the same time and voila
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Luigi is the best after Waluigi so pick him a lot unless you have Waluigi.
The developers were trying to be funny by making fun of luigi.
When your on the map press the R button and you will switch between Mario and Luigi
Link is not a character in Super Mario 64 DS. The available characters are Yoshi, Mario, Luigi, and Wario.