Before a one or two player battle, hold L + R until your opponent appears in a gold costume, or R+X to make them appear in an alternate color. You must keep the buttons held until the emey ST appears on the screen. If it does not work at first try holding the buttons down earlier then you would usually do.
Complete the game and view the ending credits. In any subsequent game, press B, A, L(2) at the title screen. The screen will change colors to confirm correct code entry. Begin another game to access a menu that will allow difficulty to be set to low, medium, or high.
To change the default name simply press L, A, B, L at the title screen. Change the default name (Partner) and press Start to begin game play.
Press Up(2), Down(2), L, R, L, R at the title screen.
Press L, R, L, R at the title screen to display the data clear screen.
Complete normal training and reset the game. Press B, A, B, Y at the title screen. A sound will confirm correct code entry. Select 'No', when prompted to continue, to fight as Falcon or Tornado.