Play as Dan:
Connect online with the game. Press X at the select login username screen. Go to the "Edit Profile" option. Then, hold L2 and press Left(4), Up, Right, Up, Left.

Play as Nefarious:
Connect online with the game. Press X at the select login username screen. Go to the "Edit Profile" option. Then, hold L2 and press Up(3), Left, Right, Up, Left, Up.

Squat count:
Highlight the "Stats" option at the main menu, then press Up, Down, Left, Right, Square. The number of times you have squatted on an opponent in multi-player mode will now appear on the stats screen.

Double bladed laser weapon:
Pause game play, then press Circle, Square, Circle, Square, Up, Down, Left(2). The wrench will be replaced with a double bladed laser.

Note: This code is revealed on the demo disc's Captain Quark mini-comic game after all the tokens are collected.

Alternate Quark costume:
Press Up(2), Down(2), Left, Right, Circle(2), Square in any Quark Vid-Comic. Alternately, press Up(2), Down(2), Left, Right, Circle, Square(2) in any Quark Vid-Comic.

Sly 2: Band of Thieves demo:
Hold L1 + L2 + R1 + R2 at the title screen.

Play as Old School Ratchet:
Have a saved game from Ratchet And Clank on your memory card to have the you have the Old School Ratchet skin available at the Phoenix Starship weapon vendor.

Bonus weapons:
Have a saved game from Ratchet And Clank: Going Commando on your memory card to have the Lava Gun, Bouncer, Holoshield, and other weapons available to be purchased.

Have a saved game file from Ratchet and Clank: Going Commando on your memory card, then go to Slim Cognitos for free weapons.