Rock ‘Em Sock ‘Em Robots – Gameboy Advance

Rock 'Em Sock 'Em Robots - Platform: Gameboy Advance

Cheats:
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At the main menu, go to passwords, and then, using the D-pad, enter the password.

Unlock Black Bruiser    LSTL2B 
Game   Finished         3CTNKS 
Unlock Pink Pummeller   6QT1KK 
Unlock Green Grappler   NMTZKQ 
Unlock Purple Pyro      02TX2T 
Unlock Silver Stretcher GZTV2K 
Unlock Brown Bully      J[]T7KH 
Unlock Orange Oppressor 2XT9KN 
Unlock Yellow Yahoo     W8T52Q 
Unlock Blue Bomber      B5T32J