In-Game Cheats
The game has built in cheats for several alternate costumes, arenas and one code to unlock The Rock. Go to the "Options" menu and select "Cheat Codes." Use the D-pad and on-screen keyboard to type "The Great One." A pop-up message will confirm the saved cheat. Go to the roster list to see The Rock added.
Cheat Device
An additional cheat device will help unlock the rest of the WWE roster. You can use the Action Replay Max or the CW Cheat device for the PSP. Follow the device's specific directions to insert cheat codes and load the "WWE Smackdown Vs. Raw 2010" game title from the list. If the title is not there, add the new title to insert codes.
Action Replay Max codes
Go to the "Add New code" section. Unlock The Million Dollar Man, Ted DiBiase, with the cheat "004D9A3D 00000001." Add Cowboy Bob Orton with the cheat "004E43D9 00000001." Unlock Dusty Rhodes with the cheat "004DE461 00000001." Go to the "Load Game" and wait for the "Insert Disc" screen. Insert the "WWE Smackdown Vs. Raw 2010" game and the cheats will be applied.
CW Cheat Codes
Go to the "Insert New Cheat Code" section and press "X." Type in "0x00542FF0 0x00000001" for Dusty Rhodes. Type in "0x00542FF1 0x00000001" for Ted DiBiase. Type in "0x00542FEF 0x00000001" Cowboy Bob Orton. Go to the "Load Game" section and the new characters will be added. Save the game at any point and the characters will be permanently in the game without cheats.