Play 16 time trial races.
You can't, birdo, is however, unlock-able on Mario Kart Wii.
Rob is not in Mario Kart Wii.
No but funky kong, miis, and normal birdo are still good
Play 16 different courses in Time Trials mode
Complete the first stages
You have to unlock one expert staff ghost in time trials
You can't. There's only Mario, Luigi, Wario, Yoshi, Peach, Daisy, Waluigi, & Toad.
Simple, you don't, you unlock baby daisy.
You have to unlock 8 expert staff ghost data to unlock him
Sorry, I dont think giga bowser is a character in Mario Kart Wii.
Complete the Mushroom and Flower Cup.
by getting good times on each track.