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Oh no! The water! I'm in big trouble if I don't fetch it!
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Ventus-Vanitas KHBBS.png

Japanese ヴェントゥス=ヴァニタス
Rōmaji Ventusu-Vanitasu
Voice actors (Ja:) Koki Uchiyama
Miyu Irino
(En:) Jesse McCartney
Haley Joel Osment
Game Kingdom Hearts Birth by Sleep
Vanitas Remnant
Themes Header.png

KHBBS tracks
Battle theme - The Key

Kingdom Hearts Union χ
The merged form of Ventus and Vanitas. Ventus's body is controlled by Vanitas.
Location HP EXP Strength Defense
Keyblade Graveyard 1000 0 26 15
Physical Fire Blizzard Thunder Dark Other
x1.0 x1.0 x1.0 x1.0 x1.0 x1.0
Stun Freeze Mini Blind Ignite Confuse
x0 x0 x0 x0 x0 x0
Bind Poison Slow Stop Sleep Death
x0 x0 x0 x0 x0 x0
Zero Gravity Magnet Warp
x0 x0 x0
Keyblade Graveyard
"Correct. I am not Ventus. His heart has become a part of mine now."

Ventus-Vanitas is the final boss in Aqua's story in Kingdom Hearts Birth by Sleep. He wields the χ-blade as a result of Ventus and Vanitas's fusion, with Vanitas controlling Ventus's body in battle against Aqua.


Ventus-Vanitas, as his name suggests, is the merged form of Ventus and Vanitas. He is physically identical to Vanitas regarding the body, using his battle stance, and Ventus regarding the face, minus Vanitas's golden eyes. He initially wears Ventus's Keyblade Armor upon his creation, but replaces it with Vanitas's bodysuit after Vanitas reveals himself to be in control.

In the opening of Kingdom Hearts 0.2 Birth by Sleep -A fragmentary passage-, Ventus-Vanitas originally retained Ventus's blue eyes, while also possessing the silver frame of Vanitas's mask. This was patched in version 1.02 so that he looks closer to how he does in Kingdom Hearts Birth by Sleep.

Ventus-Vanitas's name is a combination of Ventus and Vanitas's names, which mean "wind" and "emptiness" in Latin, respectively.



  • Strike: Ventus-Vanitas dashes and then slashes at his target. He then finishes his attack with an upwards somersault slash; a crescent-shaped beam of energy then homes in on target, as well.
  • Afterimage: Ventus-Vanitas teleports away from the foe attempting to strike him, leaving behind an afterimage. He immediately reappears behind or above his target and retaliates.
  • Blizzaga jump: Ventus-Vanitas appears above his target following the execution of afterimage; he slashes downwards, spawning three large icicles.
  • Dark Thundaga (ダークサンダガ Dāku Sandaga?): Ventus-Vanitas jumps and swings the χ-blade, striking the opponent with several bolts of blue lightning.
  • Sidestep: Ventus-Vanitas jumps to the side in order to avoid an incoming attack.
  • Flame burst: Ventus-Vanitas launches a large sphere of flames at his target that splits into three smaller, homing fireballs.
  • Eruption: Ventus-Vanitas dives underground and chases after his target in the form of a pool of darkness. When he is below his target, he leaps out of the ground and strikes him or her several times before landing a concluding strike that causes several fireballs to rain down.
  • χ-blade dash: Ventus-Vanitas dashes across the battlefield several times, striking the opponent with the χ-blade.
  • χ-blade explosion: Ventus-Vanitas warps to the center of the battlefield and gathers energy. He then unleashes a massive burst of light that travels towards the target in an X-shaped wave.


At the beginning of this climatic confrontation, Lock-on to Ventus-Vanitas and press Square when prompted to execute the Burst of Faith command with Mickey. This command grants Aqua much-needed invulnerability, deals continuous damage so long as X is tapped repeatedly, and possesses a powerful Finisher that will send the boss flying and interrupt any attack he attempts. Use Seeker Mine to interrupt Ventus-Vanitas as he rushes around the battlefield in a Sonic Blade-like fashion, and if the boss ever dives underground and becomes visible only through a moving pool of darkness, chain multiple Cartwheels together to avoid the barrage of fireballs that erupt as he attacks Aqua from below. Cartwheel can be used to avoid the crescent-shaped wave of energy Ventus-Vanitas launches after his two-hit χ-blade combo, and it is also an effective way of dodging the wave of dark energy bolts he sends towards Aqua from above. If Ventus-Vanitas is knocked off his feet at any time, he drops down from above and strikes Aqua with a χ-blade swing that spawns large icicles when he lands. Cartwheel is the best means of avoiding damage.

When Ventus-Vanitas's HP drops to about half of its total amount, he gains access to an ultimate attack whose execution is signified whenever the boss warps to the center of the battlefield and begins charging power. It is at this time that Aqua should be the most aggressive towards him, but be sure to execute Burst of Faith or a Shotlock as soon as he leaps into the air to avoid the intense burst of energy that follows. There is a small chance that Aqua can avoid this attack by repeatedly using Cartwheel along the very edge of the battlefield, but it is important to use Curaga immediately afterwards if she is hit. Depending on Aqua's level and stats, this energy burst can very well spell her end.

In terms of countering Ventus-Vanitas, the boss is best attacked with commands skilled at following mobile targets, such as Firaga Burst and Time Splicer. Even Shotlocks are useful. Ventus-Vanitas is slightly more intelligent than Vanitas is when it comes to avoiding Seeker Mine, so Aqua should be on her guard at all times. Ventus-Vanitas is swift, and he attacks almost unceasingly. Therefore, a continuous hit-and-run strategy should be used if one wishes to survive this fight. Aqua need not worry about Mickey's HP if it is fully depleted, as he revives himself in a matter of seconds. His attacks, in combination with Aqua's, should easily be able to conquer Ventus-Vanitas.


Ventus-Vanitas – Kingdom Hearts Birth by Sleep (Aqua)