*Note there is MORE than one way to unlock a specific character; however, you only need to satisfy 1 of these requirements to unlock him or her.
*An asterisk (*) indicates that the character is making his or her first appearance in a Mario Kart game.
Description: Baby Luigi is Luigi's infant form. He is pretty much Baby Mario's partner.
*Unlock 8 Expert Staff Ghost Data in Time Trials.
*Win 100 WFC Ghost races.
*Play 3,150 races.
Description: Baby Daisy is Daisy's infant form. She's here either to waste space or be Baby Peach's partner (she was created for no reason otherwise in this game?).
*Receive at least 1 Star Rank for ALL 50cc Wii Grand Prix Cups.
*Play 1,950 races.
Description: Toadette is Toad's female counterpart/sister/friend. She's ideal for those who want speed on their side.
*Complete Time Trials on ALL 32 courses.
*Receive 1,000 WFC wins
*Play 3,150 races.
Description: Dry Bones is a skeletal Koopa who is somehow alive despite being made up of just bones. He's kind of dry too...
*Win 100cc Leaf Cup.
*Play 1,050 races.
Description: Daisy is the more sporty Princess and serves as Peach's partner. Does everyone remember "Hi I'm Daisy!" (I sure do)?
*Win 150cc Special Cup.
*Play 2,850 races.
Description: Birdo is a strange dinosaur that spits eggs out of its mouth (nose?). Also Birdo is supposed to be transgendered (not sure if its a guy or a girl).
*Complete Time Trials on 16 different courses.
*Receive 250 WFC wins
*Play 1,350 races.
Description: Diddy Kong is Doney Kong's sidekick or little buddy. He's the smallest Kong in the game, so use him if you're a fan of his character or primates.
*Win 50cc Lightning Cup.
*Play 450 races.
Description: Bowser Jr. is Bowser's youngest sun and is a troublemaker just like his dad (a chip off the old block?). He's the smallest Bowser character in this game.
*Receive at least 1 Star Rank for ALL 100cc Retro Grand Prix Cups.
*Play 3,450 races.
Description: King Boo is the royal Boo and is Luigi's sworn enemy. He's a ghost and a heavy weight (I don't get how that works, but ah well). Then again, he has no feet to touch the pedals?
*Win 50cc Star Cup.
*Play 750 races.
Description: Rosalina is a fairly new character introduced in Super Mario Galaxy. She's a space princess who's shown to be rather mysterious.
*Win 50 races with a Super Mario Galaxy save file.
*Receive at least 1 Star Rank for ALL 150cc Mirror Grand Prix cups.
*Play 4,950 races.
Description: Funky Kong is one of Donkey Kong's allies and a rather loud one as well. He seems rather hip as well (though not the most prettiest sight).
*Unlock 4 Expert Staff Ghost Data in Time Trials.
*Win 25 WFC Ghost Races.
*Play 2,250 races.
Description: Dry Bowser is a skeletal version of Bowser. He's big, boney, and bad I guess (though a lazy character choice in my opinion).
*Receive at least 1 Star Rank for ALL 150cc Wii Grand Prix Cups.
*Play 4,350 races.
Weight Class depends on Mii size:
Mii (Oufit A):*
Description: Mii Outfit A is the basic Mii character option. It is pretty much your regular Mii in a biker suit. Customize your Mii's weight and size in the Mii Channel on your Wii.
*Win the 100cc Special Cup.
*Play 1,650 races.
Mii (Oufit B):*
Description: Mii Outfit B is the alternate Mii character option. Male Miis wear overalls (like Mario) while female Miis get a special dress to wear (like Peach). I believe there is a stat difference between Mii Outfits A and B.
*Unlock ALL Expert Staff Ghost Data in Time Trials.
*Win 5,000 WFC Races.
*Play 5,100 combined races/battles.