That depends on which Mario Kart game you're asking about. To unlock Rosalina in the Mario Kart games:
Wii: Complete all Mirror cups with a ranking of one star or higher, or play 50 races with a Super Mario Galaxy save file.
7: Get a gold trophy in 150cc Star Cup.
8: Characters are unlocked randomly by getting gold trophies in cups in this game.
roseilina
mario kart 7 looks better. i dont actally know
cheep cheep is not areal character
Mairo name is Mairo last is Mairo not kidding!Luigi name last name Mairo. Mairo Mairo and Luigi Mairo
It's a faster version of a Staff Ghost. If you have very good shortcuts you can beat them. Spoiler: You need to unlock some Experts in order to get Funky Kong and Baby Luigi. ( All Experts for Mii Outfit B.)
Well The Bottom Cups Are Retro And Top Cups Are Nitro :) Hope This Helped <3
If you need to unlock her in Mario kart wii here is the answer: Win the 150cc Special Cup. If you need to unlock her in Mario Kart 7 here is the answer: Win the 150cc Mushroom Cup. Source: I beat Mario Kart Wii, and I unlock Daisy in Mario Kart 7.
There is two ways: 1.(easier) Get to Rosalina's Observatory in Super Mario Galaxy 2.Get at least 1 star rank in all mirror cups
You can't unlock Pauline in Mario Kart Wii,he isn't in that game.
there is no goomba to unlock in Mario kart wii
u have to race a goast and then if u won u became a goast and u can even try to bet ur goast
you can you just have to beat bowser in the final battle of in the star battle arena!