By finishing the race's
there is no hat cup
by getting gold on the star cup
You have to win first place on 150cc Special Cup
You have to come in 1st place on the special cup in 150 cc.
There is no maniac in Mariokart Wii. Check out the characters that you can get by asking this question in the green tab: "What characters can you unlock in Mariokart?"
Sadly, you cannot unlock him on the ds. he is unlockable on mariokart wii fortunately.
No, You can't unlock Dark Toad in MK wii
depends on what saga your playing
get 1st place in all the other races and i would recommend Yoshi to race with (just to unlock stuff though)
Beat the star cup
you have to have gold in all the cups to unlock it :)
keep playing