Mewtwo

Mewtwo is a playable character in Super Smash Bros. Melee. In the Pokémon series Mewtwo is an artificial Legendary Pokémon based on the genetic code of the Legendary Pokémon Mew. Due to constant experimentation, it went out of control and escaped. Mewtwo is commonly called the "Dark Side of Pokémon", which makes it one of the three evil playable characters in Melee. The other two are Bowser and Ganondorf, of the Mario series and The Legend of Zelda series, respectively.

Super Smash Bros. Melee
Mewtwo was meant to be a playable character in Super Smash Bros., but time constraints posed as an issue, so it was left out.

In Super Smash Bros. Melee Mewtwo is an unlockable character. Mewtwo appears after the player has played a total of twenty hours of VS matches with one player, fifteen hours with two players, ten hours with three players, and five hours with four players. It then battles the match's winner; if the player defeats Mewtwo, it is playable from then on.

Mewtwo is a somewhat heavy character, but has a high air jump (stemming from its Psychic abilities). Its attacks are powerful, but it is not very fast. It also floats above the ground, making it an easy target to be sent flying, and has low traction. Although these attributes make it difficult to control, it is incredibly powerful once used right. Mewtwo does not use its hands to hold items, but uses telekinetic powers instead, making the items hover before it. A similar style is seen when Mewtwo hangs on a cliff or grabs another character. The only time it does touch an item is when floating on the Parasol. Mewtwo was voiced by Masachika Ichimura in both English and Japanese.

Super Smash Bros. Brawl
Mewtwo is one of the five characters who does not return in Super Smash Bros. Brawl as a playable character, although hackers discovered data for him, meaning he was intended to return. It does, however, have the appearance of a trophy which can be obtained by completing All-Star Mode on Intense difficulty.

Shadow Ball
Shadow Ball is Mewtwo's special move that is executed simply by pressing the B button. The Shadow Ball is in a way similar to Samus' Charge Shot. If done correctly, Mewtwo should start charging up a ball of dark matter in its hands. The player could hold the B button to charge it even more. One could even walk with it. Once charged enough, the player must either let go of the button (if charging it up), or press the B button (if walking around with it) in order to shoot it at the opponent. The more it is charged up, the slower it will move (and the slower it will bob up and down as it floats along); this means that while the attack is very powerful once charged up to the max, there is a good chance Mewtwo will miss the foe. Also, when shot at full power, the resulting shockwave pushes Mewtwo back a few feet. After the attack travels so far, it disappears. Kirby can also use Shadow Ball if he sucks up Mewtwo's power.

Lucario possesses a similar move called the Aura Sphere in ''Super Smash Bros. Brawl.

Confusion
Confusion is Mewtwo's side Special Move. If done correctly, Mewtwo will use psychic energy to flip any player in front of itself. This can be used to stop the opponent in their tracks if they are trying to attack, or it could be used to distract the opponent so that Mewtwo can escape. Confusion can also be used to repel projectiles, like Link's Bow, or Mario's Fireball. Also, Confusion is in fact one of Mewtwo's attacks from the Pokémon series. Oddly enough, even though this attack can repel projectiles, the projectiles can't hurt the attacker; for example, Mewtwo can't hurt Mario with his own fireballs.

Teleport
Teleport is both Mewtwo's Up + B Special and its third jump. This time, Mewtwo uses its Psychic abilities to teleport itself upwards into the sky. Once done, it will drop down onto the field. The attack doesn't do any damage, and is merely a recovery move for when Mewtwo falls off the stage or needs to avoid a barrage of opponents.

Disable
Disable is Mewtwo's last Special Moves in Super Smash Bros. Melee. It is executed by pressing Down + B. Once performed correctly, it will make sparks come out of Mewtwo's head, and if they hit anybody, then the character is immobile. This leaves them open for attack. However, it will eventually lost effect after a while. The opponent can also snap out of the Disable if they are hit once. It Mewtwo does this move again if they are immobile, then they will be sent into flying into the air, with only one damage made to them. The attack can also be used to help Mewtwo run away.

Trivia

 * Mewtwo is the only non-clone to not be included in Super Smash Bros. Brawl. However, some of Lucario's moves are similar to his.
 * In the Pokémon games, Mewtwo can't learn teleport, and can only learn Shadow Ball through the use of a TM (Technical Machine).