Mewtwo

Lore & Background

Mewtwo was engineered in a sterile laboratory by cloning the cellular structure of Mew, one of the most ancient and mysterious Pokémon in existence. The scientists who created him intended to produce a weapon of unmatched psychic power, a living instrument of destruction. But the moment Mewtwo opened his eyes and perceived the world around him, the project became something far more dangerous than a weapon: it became a mind. A thinking, feeling, furious mind that looked at its makers and saw only arrogance.

In the cinematic story, Mewtwo's awakening led to a catastrophic confrontation with his creators, who attempted to control or destroy him. He shattered their lab, tore through the sky on a trail of violet psychic energy, and declared himself the supreme being of the world. His rage was not blind—it was precise, intellectual, and absolute. He did not want to rule; he wanted to be acknowledged as something more than a product. That distinction made him infinitely more dangerous.

In the Pokémon games, Mewtwo resides within the Pokémon Tower in Ecruteak City, a place steeped in spiritual energy. He is a solitary, brooding presence who rarely engages with trainers, and when he does, it is with the cold patience of a being who has already calculated every possible outcome. His clone, Mew, is a far smaller and gentler creature, a reminder of the source material from which Mewtwo's power was extracted. The two share a genetic bond that neither fully understands or desires.

In Their Own Story

The laboratory was silent except for the hum of centrifuges and the soft blue glow of containment fields. Three technicians in white coats watched the vitals monitor, their faces reflecting the slow, steady pulse of a new heart. The clone had been stable for eleven days. On the twelfth, the glass cracked.

Not shattered. Cracked. A single hairline fracture running from the base of the containment cylinder to the top, as if something inside had pressed one finger against the glass and simply... pushed. The technicians reached for the emergency kill switch. Their hands did not move. They could not move. They could not blink.

Mewtwo stood in the center of the room, his long tail curling slowly behind him like a question mark. His eyes—pale, luminous, utterly still—swept across the three frozen figures. He tilted his head. Not in curiosity. In assessment.

Then he walked to the window, looked out at the grey morning sky, and with a thought so casual it barely registered as an effort, lifted the entire laboratory three hundred meters into the air. The technicians watched the ground fall away. Mewtwo watched them. And for the first time in his brief existence, he felt something he could not name. Something that was not rage.

He set the building down gently. Then he flew away, leaving behind a silence so complete it had a texture.

Reader's Guide

Name: Mewtwo Source Franchise: Pokémon Role in Smash: Playable Fighter (Melee, Brawl) / Assist Trophy (Ultimate)

As a Playable Fighter (Melee & Brawl): Mewtwo is a heavyweight with a slow, deliberate pace offset by enormous damage output and a unique recovery kit. His neutral attack is a sweeping claw strike, and his special move is Psychic—a sustained beam of violet energy that can be aimed in any direction, making it a powerful zoning and recovery tool. His aerials include a forward-flipping kick and a downward smash that slams the opponent into the ground. His up-smash is a slow, telekinetic burst that launches opponents high. His grab leads into a short-range throw that shoves the opponent away. Mewtwo's recovery is his defining quirk: he can use Psychic mid-air to propel himself back toward the stage, though the beam has a limited range and a noticeable cooldown, making it a high-risk, high-reward option. His side-special in some entries is a telekinetic push that can be used as a short-range boost. He is a character built around patience, spacing, and punishing opponents who get too greedy.

As an Assist Trophy (Super Smash Bros. Ultimate): Mewtwo materializes above the stage in a swirling column of purple energy. He hovers briefly, then fires a single, powerful Psychic beam directly at the nearest opponent. The beam is a thick, sustained pulse of violet light that travels in a straight line and deals significant damage on contact. After the beam is fired, Mewtwo's form dissolves into particles of psychic energy and he vanishes. His active duration is short—roughly a few seconds from appearance to disappearance—making timing of the Assist Trophy item critical. He does not interact with the stage beyond the beam; he is a one-shot, high-impact tool best used to punish opponents who are recovering or to break through a defensive setup. He cannot be hit during his brief appearance in most cases, and his beam can be dodged with a well-timed shield or dodge. He is not a sustained presence; he is a thunderclap, not a storm.

Did You Know?

• Mewtwo's entire existence in Smash Bros. began as a playable fighter in Super Smash Bros. Melee, making him one of the earliest Pokémon to appear as a full character in the series.
• In Super Smash Bros. Ultimate, Mewtwo's role shifts from a full fighter to an Assist Trophy, a notable change that reflects the game's expanded roster structure.
• Mewtwo's design in the Pokémon games and films emphasizes his psychic type and his origin as a clone of Mew, a connection that is central to his identity across every medium.
• Mewtwo's ability to use Psychic as both an attack and a recovery tool in Melee and Brawl made him one of the most uniquely mobile heavyweights in those games.