Mario Kart Wii/Characters

The weight of each character has little effect in and of itself, but will affect the types of vehicle available to the player.

Lightweight

 * Toad
 * Koopa Troopa
 * Baby Mario
 * Baby Peach

Middleweight

 * Mario
 * Luigi
 * Peach
 * Yoshi

Heavyweight

 * Wario
 * Donkey Kong
 * Bowser
 * Waluigi

Lightweight

 * Baby Luigi
 * Unlock 8 Expert Staff Ghost Data on Time Trials.


 * Baby Daisy
 * Attain at least 1 Star Rank for all 50cc Nitro Grand Prix Cups.


 * Dry Bones
 * Attain a Gold Trophy in the 100cc Leaf Cup.


 * Toadette
 * Play on all 32 courses in Time Trials.

Middleweight

 * Daisy
 * Attain a Gold Trophy in 150cc Special Cup.


 * Diddy Kong
 * Attain Gold Trophies in all 50cc Cups.


 * Birdo
 * Beat 250 people while playing online, or
 * Play on 16 courses in Time Trials.


 * Bowser Jr.
 * Attain at least 1 Star Rank for all 100cc Retro Cups.

Heavyweight

 * Boo
 * Attain a Gold Trophy in 50cc Star Cup.
 * Rosalina
 * With a Super Mario Galaxy save on your Wii, attain Gold Trophies in all of at least one series of Cups, or
 * Attain at least 1 Star Rank for all Mirror Retro Grand Prix Cups.


 * Funky Kong
 * Unlock 4 Expert Staff Ghost Data in Time Trials.


 * Dry Bowser
 * Attain at least 1 Star Rank in all 150cc Nitro Grand Prix Cups.

Miscellaneous

 * Mii (Outfit A)
 * Attain a Gold Trophy at 100cc Special Cup.


 * Mii (Outfit B)
 * Unlock all Expert Staff Ghost Data in Time Trials.