Eight starter + Four Unlockbles +One in DS Download Play =13 in all
24.
There are no unlockable characters in Super Mario Kart. Unlike later Mario Kart games, all of the characters in the game are playable from the start.
i think 26
24
Super mario kart
There's no characters in Mario Kart that are married.
You could get 24 characters in all
Baby Mario is already one of the starting characters on Mario Kart Wii.
You can get up to 17 characters in Mario 7 including Mii character. 9 of these are ones that you need to unlock.
You can't, characters are permanent.
24, you start off with 12 and unlock 12.
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.