Mario 64 Ds, Invisible Man In Super Mario 64 DS, I Talked 2 A Toad About The Mirror Room And He Said Something About An Invisible Man????

In Super Mario 64 DS, i talked 2 a toad about the mirror room and he said something about an invisible man???? - mario 64 ds, invisible man

He said that to deal with an ally, and all information, which is not reflected in the mirror will be found. I tryed to go to the painting of Luigi, but it does not work. I would like to unlock Luigi, before I get more stars. everyone is asking how to unlock Luigi, and what about the Hall of Mirrors. thnx 4 ur help everyone!