Input the codes below at the in-game cheats menu:
Get Every Multiplayer Characters - Left + Down + Left + Right + Down
Get Big Heads (Story Mode) - Down + Up + Left + Right + Right
Unlimited Chi - Down + Right + Left + Up + Down
Invincible - Down + Down + Right + Up + Left
Get Dragon Warrior Outfit (Multiplayer Mode) - Left + Down + Right + Left + Up
