Fight as Chizuru Kagura and Goenitz:
Hold Start and press Up + B, Right + C, Left + A, Down + D. Chizuru Kagura will appear to the right of Clark and Goenitz will appear to the left of Athena at the character selection screen.

Hidden characters:
Hold Start when selecting a fighter on the character selection screen.

Alternate costume colors:
Press D when selecting a fighter on the character selection screen.

Select winning pose:
Press A, B, or C after the last attack, before the pose sequence begins. If your character is the losing fighter, press A, B, or C on controller two at this time.