How do you unlock any characters besides Mario Yoshi luigi and wario in Super Mario 64 DS?
you can unlock luigi detective.
You start the game as Yoshi. He has to unlock Mario, who then has to unlock Luigi, who then has to unlock Wario. (See other questions to find out how.) If you have an Action Replay card, if you find the right codes you can play as other various characters. Although some people even say that Waluigi can be unlocked without this... but that's another story.