If you are talking about heavy characters I will tell you also how to unlock them:
Donkey Kong: Available at start of game
Wario: Available at start of game
Waluigi: Available at start of game
Bowser: Available at start of game
King Boo: Beat 50cc Star Cup
Rosalina: A: Have Super Mario Galaxy Download in Wii Console and win some races, B: Get a 1 star rank or higher in all Mirror Retro cups
Funky Kong: Unlock 4 expert staff ghosts in Time Trials
Dry Bowser: Get a 1 star or Higher in all 150cc Nitro cups
If you are talking about who I think is the tallest character in my opinion: definitely 110% Waluigi
Torpedo for speed unless you are driving as Rosalina then it's the Twinkle Star. Phantom for all around.
All you do is on the list of characters press the last one on the bottom.
you have to do time trial races to unlock characters/vehicles
To get mirror cups in Mariokart Wii you willk have to complete all of the cups on all engune sizes
keep playing
To unlock the characters you must complete all three levels of races 50cc 100cc and 150cc with gold, then complete the time triles in first place. This unlockes all of the characters and bikes.
to unlock everyone you have to play grand prix all classes and to unlock the rest you must do time trials it takes a while but its fun
50cc 100cc 150cc mirror mode.
you have to have gold in all the cups to unlock it :)
You have to rank 1 star in all 150cc cups
get all the medals or use a action replay. hope this helps! :D
Each person has a special talent. Try to find them all!