Dark Valefor

Dark Valefor is an optional boss in the International and PAL versions of Final Fantasy X. She guards the entrance to Besaid when the party returns after obtaining the Airship. Because of this, Dark Valefor must be defeated to acquire Anima in case the player did not obtain the treasure chest in the temple.

Strategy
Dark Valefor uses physical attacks, as well as Valefor's special attack: Sonic Wings. Energy Ray is used as a normal attack and can deal 9999 damage to the party, but Energy Blast (which functions as Dark Valefor's Overdrive) can break the damage limit to do up to 99999 damage if defenses are not high enough. It is best to use Auto-Life, or call an Aeon when Dark Valefor's Overdrive gauge is full to take the blow. Dark Valefor has the lowest HP of all the Dark Aeons, so she can be defeated quickly, before she causes trouble. The party should have high Agility and Luck. High Strength and Defense are also useful, but all stats should be well into 3 digits. Break Damage Limit and Break HP Limit are both strongly recommended. Valefor's Overdrive gauge charges up quickly, so the party's speed needs to be maxed out before it attacks. If his Strength is high enough, Wakka can take Dark Valefor out with a single Attack Reels. Yuna can also summon Anima and use her overdrive Oblivion, or Tidus can use his overdrive Blitz Ace to severely damage Dark Valefor.

As any other enemy, Dark Valefor can be killed instantly by Yojimbo's Zanmato.

Dark Valefor glitch
Sometimes, a glitch will occur and the game will crash on either the cutscene before or after the fight. If this glitch happens once, it will always happen in that save file, effectively preventing the player from ever fighting Penance, acquiring the Jecht Sphere in Besaid, acquiring Valefor's Energy Blast Overdrive if not obtained on the first visit, and even from acquiring Anima (and subsequently the Magus Sisters) if the player did not get the temple treasure from Besaid at the beginning of the game. To bypass this glitch, one must simply open the PS2 CD tray while the scene that is supposed to freeze starts (the scene will stop while the tray is open) and then close it, and the glitch will not occur.

Related enemies

 * Valefor
 * Pterya
 * Dark Anima
 * Dark Bahamut
 * Dark Cindy
 * Dark Ifrit
 * Dark Ixion
 * Dark Mindy
 * Dark Sandy
 * Dark Shiva
 * Dark Yojimbo

Final Fantasy X-2

 * Valefor