Fulfill all the requirements listed.
– Baby Daisy – Earn at least a one star ranking in each 50cc Wii Grand Prix cup races
– Baby Luigi – Unlock eight Expert Staff ghost data in Time Trial mode
– Birdo – Defeat 250 people in online racing, or play Time Trial mode on sixteen different courses
– Bowser Jr. – Earn at least a one star ranking in each 100cc Retro Grand Prix cup races
– Daisy – Win the 150cc Special Cup
– Diddy Kong – Win the 50cc Lightning Cup
– Dry Bones – Win the 100cc Leaf Cup
– Dry Bowser – Earn at least a one star ranking in each 150cc Wii Grand Prix cups
– Funky Kong – Unlock four Expert Staff ghost data in Time Trial mode
– King Boo – Win the 50cc Star Cup
– Mii (Outfit A) – To play as the Mii associated with your profile, win the 100cc Special Cup
– Mii (Outfit B) – To play as the Mii associated with your profile in a different outfit, play through and complete all thirty-two time trials
– Rosalina – Have a Super Mario Galaxy save on your Wii
– Toadette – Play Time Trial Mode on all thirty-two courses