|Final Fantasy X-2 Boss|
- Normal: "A fiend created when various magics fuse with pyreflies. It wields potent magic and is resistant to physical and magic attacks. The most sinister of Elementals."
Oversoul: "A fiend created when various magics fuse with pyreflies. It wields potent magic and is resistant to physical and magic attacks. The most sinister of Elementals."
Black Elemental's Defense is 255 and its Magic Defense is 254, making most physical and magic attacks ineffective. It uses Flare and Ultima, which can easily deal 9,999 damage to one or all party members respectively without proper preparation, being that it has 250 Magic Power. Flare can be reflected back to the boss, dealing over 1,000 or 2,000 damage. It also uses Berserk, which can also be reflected. Ultima cannot be reflected, as it hits the entire party.
If the party has the Dark Knight dressphere, and have learned Charon (Self-Destruct), and are highly leveled, using it once or twice on the boss will defeat it. Another useful move is the Dark Knight's Darkness ability, which ignores Defense and Magic Defense.
The easiest method is to start with three Gunners and then use the Cheap Shot ability, which does a critical attack regardless of Defense. In three turns, if the characters are at high enough levels, one can leave the battle unscathed. Alternatively, if the party have enough gil, a Samurai's Spare Change ability can instantly defeat the boss at any level. The player should equip the Highroad Winds Garment Grid to ensure the first strike.
Another tactic involving Gunners is to use Tableturner on Black Elemental. Black Elemental's Defense is 255, thus Tableturner will invoke great damage upon it, maybe even killing it in one hit if one's strength is high enough and/or one is lucky enough to land a critical hit.
Another a simple strategy is to use the Blue Bullet Annihilator learned from the Experiment, which ignores all magic defense. Even with modest stats by Chapter 5 when Black Elemental is encountered it will almost always hit 9,999 damage without Break Damage Limit resulting in an easy win with one move.
There is also a way to survive the Ultima attack head on by having Break HP Limit and using a Stamina Tablet or Stamina Tonic to double the party's HP. If a girl's dressphere had a high HP boost with Crystal Bangle equipped, their HP should break the HP limit to survive the Ultima attack.
Using the White Mage dressphere, and equipping accessories and a Garment Grid to boost magic defense will make Ultima survivable. An Oath Veil, Crystal Bangle, and the Valiant Luster Garment Grid can provide maximum Magic Defense. The party should cast Shell as soon as the battle begins, and Ultima will only deal around 1400 damage. The player can use Vigor to heal. Players can have the other two girls in damage-dealing dresspheres to speed up the fight, though they will need frequent reviving.
Black Elemental can also be bribed for approximately 65,000 gil.
In the Fiend Tale endings, another notable Dark Elemental was created from the spirit of a young girl who believed that she was a daughter of a Maester in Bevelle Temple. Having studied the traditions and rituals of Yevon since the time of her youth, knowing the inner workings of Bevelle Temple, she wanted to become a Maester like her father. She even befriended another girl who wanted to become a Maester.
She was attacked by an Al Bhed assassin working for an Anti-Yevon movement. She found it odd that someone like her, having a virtuous life, ended up becoming a fiend instead of being sent. With Shinra creating a pocket world from her memories, the Dark Elemental learns she was a decoy and that her friend was the Maester's real daughter with her dead body buried in secret. It appears the real daughter died during Sin's attack on Bevelle.
Like its weaker brethren of the Elemental family, it has pitiful Strength, Luck, and Evasion. The Agility is rather mediocre. However, the Black Elemental's power lies within Magic, and it has absurdly high Defense and Magic Defense (even at the lowest of levels), and decent Accuracy.