50cc star cup
You can't unlock him. You can only play as "King Boo" on "Mario Kart Wii".
Win the 50cc Star Cup.
king boo toad and toadettee and peaty pirahna
You can't.
King Boo's fourth kart is the Aero Glider also known as the Jetsetter. To unlock it, you need to attain at least 1 Star Rank for all 150cc Retro Grand Prix Cups
if you win the star cup you unlock king boo but that's it
To get King Boo, beat special cup in 1st place. But, there is no boo.
Like Mario Kart Double Dash you can unlock him and in some Mario Marioparties.
No, Boo isn't in Mario Kart Wii.However, King Boo is unlockable in the game by winning a gold trophy in the 50cc Star Cup.
King Boo
finish the star cup on mirror mode ok ok that's how i pretty sure
You can unlock King Boo by playing the Time Trial for the Ghost Raceway.