The best thing to do to unlock characters is to beat each and every cup, in all difficulties (50, 100, 150 & mirror) in first place.
I think there's at least one or two characters that need to be unlocked by beating the normal staff ghosts in the time trials, too.
Also, to unlock Mii Suit B, I think you need to either beat every expert staff ghost, and/or get a triple star rating in each cup on all difficulties.
how do you unlock 150cc in madascar kartz
Get points
I have Mario Kart Wii and played it lots of times. I don't think you could unlock more characters. Or if you could, IDK.
You could get 24 characters in all
There is no maniac in Mariokart Wii. Check out the characters that you can get by asking this question in the green tab: "What characters can you unlock in Mariokart?"
Do cups. I think you unlock them by doing the 150cc on it.
You can unlock Peach, Jessica, Dragonlord, and Patty.
Get gold trophy in grand prixs to unlock karts and characters.
i will get some unlock in wwe 12
To unlock Characters in Mario Kart Wii you must beat the single player races. When you get a gold trophy in all of the races and a star ranking in all the races you will have all the characters
you have to do time trial races to unlock characters/vehicles
Baby Mario is already one of the starting characters on Mario Kart Wii.