if your talking about Super Mario 64 ds there are 2 luigi paintings (1 in the castle and 1 in boo's mansion) the 1 in the castle is fake and the 1 in boo's mansion is the reals one that u can enter by jumping into it.
check the game guide on IGN...........its on the course Big Boo's Haunt :P
Yoshi
No its for gamecube.
walmart
YOSHI
in the basment
Mario
Yes there will be a luigis mansion 2. Its called the elictric boogaloo
no its a girl named lola
Daisy, i think :)
probably in the laundry room
Wario's brother Luigis cousion and nemesis.