While highlighting a character at the selection screen, hold Select to unlock their EX version. If done correctly, their portrait will change. Note: To select BOTR Iori and Leona or Orochi and Goentiz, you first must defeat them in Arcade mode.
Defeat Goenitz in Arcade mode.
Defeat Orochi in Arcade mode.
Defeat Orochi Iori in Arcade mode, and successfully complete the game.
Defeat Orochi Leona in Arcade mode, and successfully complete the game.
Defeat all 64 characters (including Goenitz, Omega Rugal, and Orochi) in Endless mode to unlock the Movie Gallery.
Use the following edit teams in Arcade mode to unlock the corresponding team's ending gallery after the ending credits. The edit team's gallery will be available in Gallery mode.