You can't, characters are permanent.
Unfortunately, Diddy Kong is not one of the characters in Mario Kart 7 =(
there are no cheats
You can get up to 17 characters in Mario 7 including Mii character. 9 of these are ones that you need to unlock.
No. Mario Kart 7 is ONLY for the 3DS. Mario Kart Wii is not the same thing as Mario Kart 7.
the wiggler is one of the new characters
mario kart 7 of course
Mario Kart 7 is the seventh installment of Mario Kart games. It is exclusively for the 3DS.
No, he is not in Mario Kart 7
No, but in Mario Kart 7, you can customize it.
Answer: It depends on your copy of the game regionAmerican Mario Kart 7?Australian Mario Kart 7?Chinese Mario Kart 7?European Mario Kart 7?German Mario Kart 7?Japanese Mario Kart 7?Korean Mario Kart 7?United Kingdom Mario Kart 7?Your answer would depend from where your from all game IDs from different countries will be different.
No, Mario Kart 7 is for the Nintendo 3DS
The very first Mario Kart was released in 1992 on September 1st. Mario Kart is known for its multi-player racing that includes other Nintendo characters, the latest Mario Kart was released on December 7, 2011 and was named "Mario Kart 7".