You get a star on every course AND unlock everything!
Mariokart wii
Beat the star cup
Well if your talking about Mariokart DS then beat 100cc
Rob is unlocked once you beat 150 CC Mirror.
If in Mariokart wii, any of the low-class racers (babies) And if in mariokart DS, either luigi or yoshi.
beat the 150 mirror regular cups(the new tracks)
you could him get after you beat all the missions and you beat 50c 100c 150c and mirror in grand prix
First beat 150cc. You should of unlocked 150cc mirror. If you beat 150cc mirror you unlock R.O.B.
It's the leaf cup, actually. Beat the flower cup.
beat the 150 mirror top cups in first place all 4 of them and beat all the missions
There will be a long credit page. To skip it, simply press "+" on your remote and continue accordingly.
Quite easy. Just beat the 50 CC Star Cup.