Xiaolin Showdown Codes -

Play as Chase:
Defeat Mala Mala Jong during the last level of Adventure mode.

Play as Jack Spicer:
Defeat Jack Spicer during the Jack Attack level in Adventure mode.

Street costume:
Reach the "Grass Hopper" rank.

Robot costume:
Reach the "Martial Artist" rank.

Monk costume:
Reach the "Warrior Monk" rank.

Showdown costume:
Reach the "Wudai" rank.