This article is incomplete. Please feel free to edit this article to add missing information and complete it. Reason: History/role in the story should be better elaborated; screenshots; VA info
Shadow Mewtwo is a regular Mewtwo that has been corrupted by a Shadow Synergy Stone. Instead of being white, it is instead a very dark gray color. Its tail is also dark gray, although at the tip it is tinted orange and has a crystaline texture, due to the Shadow Synergy Stone. The Shadow Synergy Stone that is corrupting it is embedded in its left shoulder (right from forward POV). Besides this it appears to be identical to an uncorrupted Mewtwo.
Forms
Shadow Mewtwo can Mega Evolve into Mega Shadow Mewtwo X. It is currently unknown if it has a corresponding Y Mega Evolution.
Mega Shadow Mewtwo X is extremely similar to regular MegaMewtwo X, although it retains its dark gray coloration from its base form. The Shadow Synergy Stone embedded in its shoulder grows much taller, and it also gains orange crystals on each of its shoulders and horns. The ridges on its arms begin to glow orange, as well as the seams across its chest and between its torso and tail, and it gains a similar glowing seam on each of its lower legs. It is shown to be able to stretch its limbs to extreme lengths, just like its non-shadow counterpart.
Spoiler warning: this article may contain major plot or ending details.
In the past, Anne was almost possessed by a Shadow Synergy Stone but was saved by Mewtwo, whom the Shadow Synergy Stone took control of and merged with instead. Under the influence of the Shadow Synergy Stone, Shadow Mewtwo traveled around Ferrum, draining Gaia power from the normal Synergy Stones and continually increasing its own power. Shadow Mewtwo is eventually defeated in battle by the player, after which Anne uses the power of the Synergy Stone contained in her brooch to separate the Shadow Synergy Stone from Mewtwo and restore it to normal.
Spoilers end here.
Move list
Burst Attack
Move name
Command
Use
Notes
Type
Dark Nova
during Synergy Burst: L + R
-
pierces counter attacks / damage up when hits at close range
In this form, its Standard moves deal more damage and have improved properties (such as being faster, bigger, invulnerable, etc.), and its Pokémon moves no longer consume HP. Additionally, this form grants access to Dark Nova, Shadow Mewtwo's burst attack, which is one of the most powerful in the game.
As a Boss, Shadow Mewtwo starts in and permanently maintains this form. Additionally, it has several moves exclusive to the boss fight, taken from other playable characters, including Mewtwo's Fire Punch, Thunder Punch, and Ice Punch combo, and Suicune's Blizzard.[citation needed]
Changed moves
Move name
Command
Changes
grab attack
Y + B
Increased Damage
Field Phase only
Ranged Attack
Y
Increased number of projectiles, increased damage per projectile
side Ranged Attack
✚ side + Y
Travels forward slightly, increased duration
jumping Ranged Attack
midair Y
Increased number of projectiles
Homing Attack
X, X, X
Increased speed
Homing Attack: charge
X, X, X (hold)
Increased speed
jumping attack
midair X
Increased damage, summons a giant pillar of energy to hit the opponent
jumping attack: charge
midair X (hold)
Increased damage, summons a giant pillar of energy to hit the opponent
Duel Phase only
weak attack
Y, Y
New move; faster, mid low on the first hit
Poké Combo 3
✚ down + Y, Y, Y
Second hit can crouch under high attacks
midair weak attack
midair Y
New move; single hit, increased damage, better combo ability
backward strong attack
✚ back + X
Increased damage, dash cancellable later
high stance strong attack
✚ up + X
New move; strike instead of projectile, increased damage, mid, increased speed, launches opponent
low stance strong attack
✚ down + X
Gains 4 extra hits, increased damage, increased priority
midair strong attack
midair X
Increased damage, summons a giant pillar of energy to hit the opponent
midair strong attack: charge
midair X (hold)
Increased damage, summons a giant pillar of energy to hit the opponent
Shadow Mewtwo from the reveal trailer
Mega Shadow Mewtwo X appearing as a boss in Pokkén Tournament's Story Mode
Shadow Mewtwo's Amiibo Card art
Shadow Mewtwo's Player 2 color, used when two Shadow Mewtwo fight each other
