Bonus characters:
Select battle mode. Press B(12), Right(8) at the character selection screen. The screen will flash to confirm correct code entry. Manto Ape and Karakuri may now be selected.

Alternate Yagumo costume:
Enable the "Bonus characters" code. Select Yagumo, then press A(2), Forward + A, C to turn her costume white.

Alternate Kinu costume:
Enable the "Bonus characters" code. Select Kinu, then press Down, Down/Away, Away, Down/Away, Forward, B + C to turn her costume purple.