EX Options
At the main menu, hold L and choose the "Option" selection.

Completion bonuses
Successfully complete the game with a 100% to unlock the introduction sequences from the arcade games and pictures in the "Art Gallery".

Play as Marionette
Select arcade mode. At the character selection screen, highlight "?", then press Start(7), followed by any Punch or Kick.

Play as Oboro Bishamon
Select arcade mode. At the character selection screen, highlight Bishamon, then hold Start and press any Punch or Kick.

Play as Shadow
Select arcade mode. At the character selection screen, highlight "?", then press Start(5), followed by any Punch or Kick.