His rival(s) are Waluigi for sure, and I suppose Mario.
waluigi
the reason wy waluigi hate poor little luigi is because he finds luigis generosity and kindness to be sickening. i realy dont like waluigi much.... i just think he needs to get to know luigi a little better....thats all...plus wario is marios rival so waluigis gotta be luigis rival.
Yoshi
No its for gamecube.
YOSHI
walmart
in the basment
Mario
check the game guide on IGN...........its on the course Big Boo's Haunt :P
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