The Legend of Spyro: The Eternal Night Cheats - Wii

Unlock Dark Spyro
First, you have to beat the story mode. Then, go to the main menu and select "Extras". Load the save file with your completed game, click on "Dragon Challenges" and beat all five of them -- the game will tell you that you have unlocked Dark Spyro. Go back to the main menu, load your game again and save it. Use the the element change button until you reach Dark Spyro (the last one in the elements sequence).