International Superstar Soccer 2

Superstar team:
Press R, Up, Down, L, X, B, Left, Right, B, A on controller two at the title screen.
Information in this section was contributed by lhena89.

Dog:
Press Up(2), Down(2), Left, Right, Left, Right, B, A on controller two at the title screen. The sound of a dog barking will confirm correct code entry. A dog will appear on the field and run after the ball. It will also hold yellow cards.
Information in this section was contributed by lhena89.

Turn referee into dog:
Press Up(2), Down(2), Left, Right, Left, Right, A, B before the introduction is spoken.
Information in this section was contributed by lhena89.

Additional skill points:
Enter the "Edit Players" screen before a match. Assign all your available skill points, then highlight "Cancel" and press Y. You will have 200 more skill points to distribute.
Information in this section was contributed by lhena89.