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Metamorphosis KHBBSFM.png

Japanese メタモフォシス
Rōmaji Metamofoshisu

Type Unversed
Game Kingdom Hearts Birth by Sleep
Themes Header.png

KHBBS tracks
Battle theme - The Tumbling

Kingdom Hearts Birth by Sleep
This giant, floating Unversed showed up while Ventus was sailing through the Lanes Between. It then took refuge on a transport ship in Deep Space. Despite its most blubbery efforts to sabotage the ship, the Metamorphosis was simply no match for Ven and Experiment 626's teamwork.
Location HP EXP Strength Defense
Deep Space 500 0 19 12
Physical Fire Blizzard Thunder Dark Other
x1.0 x1.0 x1.0 x1.0 x1.0 x1.0
Stun Freeze Mini Blind Ignite Confuse
Bind Poison Slow Stop Sleep Death
Zero Gravity Magnet Warp

Hyperdrive, Experiment 626's D-Link
Deep Space

The Metamorphosis is an Unversed that is found in Kingdom Hearts Birth by Sleep. It is one of the bosses at Deep Space.


Kingdom Hearts Birth by Sleep[edit]

As Ventus travels between worlds, he is attacked by a mysterious Unversed. He fights it off, but the Metamorphosis flies towards the Grand Councilwoman's spaceship. Ventus trails after it and pursues it throughout the ship, meeting Experiment 626 along the way. Ventus eventually catches up to the Metamorphosis in the engine room, where it had been causing large amounts of damage, and teams up with Experiment 626 to defeat it.


The Metamorphosis is a large, jellyfish-like Unversed with pale blue skin that fades to white at its tentacles, and a body adorned with silver linings. It has a sleek body made primarily of three large tentacles, each with arrowhead-shaped tips and light blue diamonds. Its lower body condenses into a twisted, black tail. The Unversed emblem adorns the front of its lower body, while its circular, black face is on the tip of its upper body. Its red eyes are set in a sorrowful expression.

In Kingdom Hearts Birth by Sleep Final Mix, the Metamorphosis's skin becomes white, which fades to black at its tentacles. The lining on its body is now purple, with turquoise diamonds on each tentacle. Its lower body and tail are also purple and fade to black toward the bottom.

Metamorphosis is the process during which one thing turns into another, reflecting Gantu's belief that Experiment 626 had transformed into this Unversed.


First battle[edit]

The first battle against the Metamorphosis takes place in the Lanes Between, with Ventus fighting from atop his Keyblade Glider. The command menu will change only to host four commands. Triangle will let Ventus use the Charge technique, Circle will allow him to jump, Square will allow him to put up a barrier, and X will allow him to attack the Unversed boss. As this is a change in the battle system, no Command Styles may be used. While the Focus and D-Link Gauge will be filled and ready for use, they too cannot be used. The player does not need to deplete the Metamorphosis's HP to zero in this battle. All they must do is attack until the battle ends automatically and survive.

At the start of the battle, immediately Lock-On to the boss. The player can then begin to attack the foe with the Air Gyre or Charge commands. Both of these attacks have a relatively long range, and they have a strong chance of hitting. The Metamorphosis will only charge at Ventus or spin in place to damage him with its tentacle-like arms, Barrier able to defend against both attacks if its usage is timed correctly. Simply continue the onslaught and use Barrier if necessary, and the battle will end rather quickly.

Second battle[edit]

The second all-out battle against the Metamorphosis is unique, as well. Not only will the player have Experiment 626 as a party member, but they also will have to prevent the ship's engine from taking too much damage. Ventus can use Shotlocks and Command Styles but not D-Links due to 626's presence. Instead, the player should use 626's presence to their advantage, as he is the key to being triumphant in this battle. He also doesn't need to be healed, automatically reviving if his HP hits zero.

At the start of the battle, again Lock-On to the Metamorphosis. Begin hitting it with aerial combos, but do not get cocky. The Unversed will soon begin to fly out of attack range, certain Deck Commands only able to hit it at this point. Should the Metamorphosis latch onto the glowing column in the center of the battlefield, the yellow bar indicating the engine's damage on the top-left of the screen will begin to fill (if the bar fills at this or any point during the battle, Ventus will lose and have to retry the boss fight). Bombard the Unversed with Ventus's strongest long-range or aerial combos, attacks such as Tornado Strike recommended (press Triangle when the on-screen prompt appears each time for maximum results). In terms of its counterattacks, the Metamorphosis will only rush at the player or spin like a top towards Ventus, its arms slashing as it does. It can also spin around while shooting lightning from its arms, and it can also fire a laser from its tail.

Eventually, the Metamorphosis will vanish, Ventus's only way to track it being the Lock-On feature. Ventus will not be able to stay Locked-On, however, as the Unversed will vanish and reappear far out of attack range on the very top of the illuminated column. This is the time for the player to perform a special Deck Command with 626 called "Astro-Strike", one that will launch him to the Metamorphosis's location. While the Metamorphosis will have all ready increased the engine's damage level a great deal, 626 will detach it from the column, allowing the Unversed to be attacked once more. To surmise, the key to winning this battle is staying away from the boss, only approaching it to perform Ventus's fast-paced combos. Otherwise, long-ranged attacks should be favored. Use Astro-Strike when necessary, and the battle will end in victory.

Technique Element Status Power Block?
Spiral Dive (スパイラルダイブ
Supairaru Daibu
First Battle Physical 0.5

Second Battle Physical 1.5 per hit
Spins, then charges forward while spinning like a drill. In the second battle, it may charge for a long time.
Spin Attack (スピンアタック
Supin Atakku
First Battle Physical 0.5
2nd hit+: 0.25

Second Battle Physical 1.5
2nd hit+: 0.5
Sweeps away the opponent while spinning like a top.
Punch (パンチ
Physical 1.0
Slashes with its umbrella tip-like appendages.
Only used during the second battle.
Thundaga Shower (サンダガシャワー
Sandaga Shawā
Thunder 2.0 per hit
Summons lightning one after another while moving directly above the opponent.
Only used during the second battle.
Tri-Buster (トライバスター
Torai Basutā
Physical 2.0
Fires a large triangular light bullet.
Only used during the second battle.
Guard/Block: △ = Can be blocked; O = Can be blocked and interrupted (melee) or deflected back (projectile); X = Cannot be blocked.
Reaction Commands
Reaction Command Element Power Description
Astro Strike (アストロストライク
Asutoro Sutoraiku
Attack icon Neutral 2.2 Can be used after pressing Square near Experiment 626 when he starts jumping. Appears when the Metamorphosis is out of range.
Throw Experiment 626 at the Metamorphosis. Fills the Command Gauge by 25 points.


Metamorphosis I – Kingdom Hearts Birth by Sleep (Ventus) Metamorphosis II – Kingdom Hearts Birth by Sleep (Ventus)