Dragon Ball Advance Adventure Cheat Codes for Gameboy

Unlockables
Boss Mode - Finish the game with both Goku and Krillin
King Piccolo - Finish the game with Goku
Piccolo - Finish the game with Krillin
Play as Krilin - Finish the game with Goku
Rock breaking mini-game - Finish the game with Goku

Unlock Juckie Chun for Tournament Mode
Beat him with Goku in Story Mode

Unlock Son Gohan (Goku's grandfather) for Tournament Mode
Beat him with Goku in Story Mode

Unlock Taopaipai for Tournament Mode
Beat him with Goku in Story Mode

Unlock Tenshinhan for Tournament Mode
Beat him with Goku in Story Mode