Press D when selecting a fighter on the character selection screen.
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.
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.