LEGO Star Wars III: The Clone Wars Cheats :
There is an empty spot in the character select screen in the bottom right. That is where Savage Opress should be. He is only available by code. The code to receive him is MELL07. To enter a code go to the pause menu. Select "Extras". Then select "Enter Secret Code". Then punch in the code MELL07 and press A to get Savage Opress.