Samurai Jack: The Shadow of Aku GameCube Cheats

 
Gamecube
Crystal Sword:
 During play, hold the analog stick Down + c-stick Up, then A, X, B, Y.
Sketch Gallery:
 Beat the game on Easy.
Background Gallery:
Beat the game on Normal.
Model Gallery:
 Beat the game on Hard. 
  
Thanks to Revolution reader Samurai Bob!