You can unlock him in both Mario Kart DS and Mario Kart Wii. To unlock him in both games:
DS: Get gold trophies in all 50cc Retro Cups.
Wii: Get a gold trophy on 100cc Leaf Cup.
You unlock him by winning the 100cc leaf cup! =-)
you have to win a certain trophie to unlock him
To unlock Dry Bowser on Mario Kart you have to get a star rank on every 150cc cup to get a star rank what I did was beat every track on the cup and stay in first about 75% of the time Dry Bowser is hard to unlock but worth it
To unlock Dry bones go to grand prix and go to 50cc and win first of sencond or thrid place on lighting cup get rank b
Dry Bowser is Bowser, dead. In bones. Bony Bowser. To unlock him, unlock Funky Kong. I think...
Daisy, Dry Bones, R.O.B. and Waluigi.
dry bowser:get 1 star rank or more on 150cc top cups dry bones: win (get first place) 100cc leaf cup
Win gold in the Leaf Cup on 100cc
you cannot unlock link in mario kart but you can unlock dry bones, daisy, waluigi, and R.O.B.
You can unlock: Daisy Dry Bones Waluigi R.O.B. With DS Download play or cheats: Shy Guy
Dry Bones, Daisy, Waluigi, R.O.B (Robot Operating Buddy).
unlock dry bones Yoshi complete leaf cup 100c