All Working LEGO Star Wars II: The Original Trilogy Cheats - Xbox

Cheat Mode
Enter one of the following codes to unlock the corresponding character for purchase in free play mode:

UCK868 - Beach Trooper
BEN917 - Ben Kenobi's ghost
VHY832 - Bespin Guard
WTY721 - Bib Fortuna
HLP221 - Boba Fett
BNC332 - Death Star Trooper
TTT289 - Ewok
YZF999 - Gamorean Guard
NFX582 - Gonk Droid
SMG219 - Grand Moff Tarkin
NAH118 - Greedo
YWM840 - Han Solo with hood
NXL973 - IG-88
MMM111 - Imperial Guard
BBV889 - Imperial Officer
VAP664 - Imperial Shuttle Pilot
CVT125 - Imperial Spy
JAW499 - Jawa
UUB319 - Lobot
SGE549 - Palace Guard
CYG336 - Rebel Pilot
EKU849 - Rebel Trooper from Hoth
YDV451 - Sand Trooper
GBU888 - Skiff Guard
NYU989 - Snow Trooper
PTR345 - Stormtrooper
HHY382 - The Emperor
HDY739 - TIE Fighter
NNZ316 - TIE Fighter Pilot
QYA828 - TIE Interceptor
PEJ821 - Tuskin Raider
UGN694 - Ugnaught

Invincibility
On Episode IV Chapter 4 in Free Play mode use 3CPO to unlock the first door. Then use someone who has force powers to put together the fridge in the room. The fridge will open and a Super Red Power Block will pop out, allowing you to buy Invincibility in the cantina for 900,000 studs.

Bounty Hunter mode
Purchase all the bounty hunters (Boba Fett, Bossk, Dengar, Greedo, IG-88, and 4-LOM) to unlock the Bounty Hunter mini-game.

Lego City
Get 60 Gold Bricks, then build the doorway outside.

Characters from the original Lego Star Wars
Have a saved game file (any or all characters unlocked) from the original Lego Star Wars on your hard drive. Load the game, go to the shop, and buy the "Use Old Save" in the Extras section for 250,000 studs. Then, pause game play, go to the "Extras" menu and turn on "Use Old Save". Then, replay any level in Free Play mode. All the characters from Lego Star Wars (and the unlocked ones from Lego Star Wars 2) will be available. and you can use them to play in Free Play mode. This very helpful in order to collect all the Lego canisters.