How to Unlock Baby Luigi in Mario Kart Wii

– In order to beat the expert staff ghosts, use the boosts to give yourself a bit of an edge over them. Also practice and master the art of cutting corners. This involves using boosts over dirt and large patches of grass.
– Even though some expert staff ghosts need to be beaten by only four seconds, it is best to aim for a seven-second margin to be on a safer side, as the exact time for each course is not very clear.
– You will know that you have successfully beaten the expert staff ghost by a sufficient margin when a notification saying “A fast staff ghost has appeared” shows after the race.
– Image Courtesy: fantendo.wikia.com