Using a hacking tool called WiiRD revealed several unused playable characters in the Wii version of Mario & Sonic at the Olympic Games: Birdo, DK, Silver, and Jet. The Birdo model doesn't seem to be finished because the mouth seems off. Also, several other characters that were used as background characters can be made playable also. These characters are: Shy Guy, Toad, Lakitu, Charmy, Espio, Cream, Boo, Bullet Bill, Goomba, Egg Pawn, Flapper, Kiki, and Big. These characters can only be used in certain places such as the trampoline event.
|Mario & Sonic at the Olympic Games|
|Main Article | Game Secrets | Cheat Codes|
|Sonic games for the following systems|
|2007 Sonic and the Secret Rings | Mario & Sonic at the Olympic Games 2008 Sonic Riders: Zero Gravity | Sonic Unleashed 2009 Sonic and the Black Knight | Mario & Sonic at the Olympic Winter Games | Sega Fun Pack: Sonic and the Secret Rings & Super Monkey Ball Banana Blitz 2010 Sonic & Sega All-Stars Racing | Sonic Colours 2011 Mario & Sonic at the London 2012 Olympic Games|