Sephiroth is one of the villains fighting for the side of Chaos in Dissidia Final Fantasy and Dissidia 012 Final Fantasy. A legendary SOLDIER operative who wields an impossibly long blade with great ease, but one day, he discovered the secrets of his past and went rogue. In battle, he combines long reach with incredibly swift swordplay that crushes opponents in the blink of an eye. Standing apart from the other villains, Sephiroth has little interest in either destroying the world or ruling it, working towards a separate goal. His immediate desire is to face his archrival, Cloud, and he manipulates Cloud's emotions to force him into battle, sometimes for no reason other than to fight him.
Sephiroth's default appearance is virtually identical to his original Final Fantasy VII appearance, with some changes to resemble Yoshitaka Amano's artwork of him; His belt is ornate and decorated with beads, he wears a bracelet with similar beads on his right wrist, and both of his pauldrons have a different design. Underneath his coat are white and lavender sashes, both a reference to Amano's design and to his wings as Safer∙Sephiroth.
Sephiroth's first alternate outfit "Executioner" is based on his appearance in the final scripted battle in Final Fantasy VII, leaving him shirtless with black pants being colored lighter than the original.
Sephiroth's second alternate outfit "Custom Coat" is based on his Tetsuya Nomura artwork for Final Fantasy VII. He wears a less elaborate coat with no sashes or beads, a different belt with the original SOLDIER logo, differently styled bangs and different pauldrons.
Like Cloud and Squall, his DLC outfit, "Kingdom Hearts Gear", is his appearance from the first Kingdom Hearts. Sephiroth's coat flares out behind him and has a tattered appearance. The linings of his coat are red, and he has red wing-like protrusions from his wrists. His hairstyle matches that of his "Custom Coat" costume. His hair and pauldrons are styled in the same manner as his Final Fantasy VII alt outfit, and he has a higher collar. Sephiroth's wing, which is always present in Kingdom Hearts, is only present in his EX Mode, and is dark blue and black with a stylized design.
His manikin version, Imaginary Champion, is light blue.
In battle, Sephiroth uses a "Focused Blade" style, bombarding his enemies with swift sword attacks. Sephiroth's Bravery attacks hit multiple times with only a single button press, and while pressing O again will continue the combo, pressing it too soon will prevent Sephiroth from finishing the first strike before moving on to the second, minimizing overall damage and therefore timing is crucial to maximizing Sephiroth's power. When properly timed his melee strikes are powerful, but he has very few ranged capabilities. Sephiroth's ground speed is fairly fast, but he is not as fast as other characters. His HP attacks are versatile and hit over a wide area around him, but are weaker at long range.
Attack an enemy with a three sword swings that hit multiple times. Can initiate a chase
Swing sword to fire multiple energy waves. If the waves strike the opponent, Sephiroth teleports closer to strike them again and knock them away, Can Wall rush when attacking for extra damage.
Quick, short-ranged single slash that knocks opponent away. can Wall Rush for additional damage
Summons four energy balls around opponent that converges upon them
Aerial combo, similar to Reaper but with two hits instead of three. Can initiate a chase
Dash past enemy to strike them multiple times, can Wall Rush for additional damage when dashing.
Swing sword to fire multiple energy waves. If the waves strike the opponent, Sephiroth teleports closer to strike them again and knock them away
Charge and summon a meteor to attack. Normally, the meteor is flung from above Sephiroth very quickly, but has short range. Charged, the meteor descends from above the opponent slowly
Quickly charge forward while slashing multiple times, Can Wall rush when attacking for more damage
Guard and charge forward with a single slash to hit multiple times, and then strike again to do HP damage, Can Wall rush when attacking to deal more damage. Also has a slight Blocking effect.
Swing sword and charge upwards on an angle, Can Wall rush when attacking after unleashing this attack for greater damage.
Swing sword and stab downward rapidly. Release button to stop and unleash a circular wave of energy around Sephiroth, or hold button to slam into the ground and create a fissure around him.
EX Mode - Reunion
Recovers HP over time during EX Mode.
Glides through the Air by holding X
Doubles Critical Hit Rate while in EX Mode
Reduces his opponent's Brave Points to 1. While it has a long casting time, it is faster than Golbez's similar Black Fang and Ultimecia's Time Crush. Used by pressing R+[Square]
Where the player repeatedly taps O to fill up a limit meter. If the limit meter is filled up, Sephiroth knocks the opponent into the exploding sun. If the meter is not filled, Sephiroth merely executes a normal sword slash. In the full version of the move, Sephiroth stands in front of the fire in a similar fashion to the way he stands among the burning village during the Nibelheim Incident, his trademark scene.