How to Catch Mewtwo in Pokémon X and Y

Mewtwo is one of the most famous and elusive Pokémon in the series' long history, and it is finally available for everyone to catch in Pokémon X and Y. You'll need to have beaten the Elite Four, but Mewtwo is well worth it. This Psychic-type Pokémon will make a powerful addition to your competitive team, and will make the rest of the post-game content much easier. See Step 1 below to learn how to add it to your party in both Pokémon X and Y.

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1
Be prepared! Mewtwo is a level 70 Pokémon, and it knows Psychic, Aura Sphere, Barrier (raises its Defense), and Recover (restores half its HP). You will need Pokémon stronger than Mewtwo. Get a Pokémon that can Paralyze it, a Pokémon that knows Sing, or any other Pokémon that uses any other status condition. In this type of battle, you need more strategy than power. Do not use Toxic, Will O' Wisp, or any move that causes a HP-sapping status condition. This makes damage worsen every turn, and Mewtwo is going to faint quickly if you are not careful. When you are ready, advance.
- Paralysis is best, since this condition makes Mewtwo slower, easier to catch, and less likely to use moves.
You will need to beat the Elite Four and complete the main game before you can get Mewtwo. See this guide for details on how to best build your team to take down the Elite Four.
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Mewtwo is a tough catch, and you will need a large number of Ultra Balls, Timer Balls, Dusk Balls, and/or a Master Ball (if you still have it).
The Ultra Ball is ineffective, but 40 may work (this is not, however, guaranteed). Timer Balls are if there at least 30 turns. The Master Ball always works, unless you are trying to catch a trainer's Pokémon-but you may need it later.
Mewtwo is level 70, which means you're going to be in for a tough battle. Make sure that you have a party that can survive Mewtwo's attacks as well as put out enough damage to lower its health for capturing.
You can find Mewtwo outside of Pokémon Village. Pokémon Village can only be accessed by traveling down Route 20 in Kalos.
7
Find the cave on the edge of the village. Walk to the left after reaching the village until you reach the edge of the river. Use Surf and travel up the river until you reach the waterfall. Jump back onto the ground on the right side of the bottom of the waterfall. Walk down the path to the right until you reach the cave.
- The cave entrance will be blocked until you become the Champion, by defeating Diantha.
Once you enter the cave, save your game. If you accidentally make it faint you can refresh. Don't worry if you leave before talking to it: It's going to stay there unless it's in a battle.
After saving and ensuring that everyone is ready, walk up to Mewtwo and talk to it. After a short cut-scene, the battle will begin! If you are going to use any pokéball other than a Master Ball, go ahead and dwindle its HP down.
Psychic deals 90 damage (unless you have a Dark-type Pokémon). Barrier sharply raises its defense. Recover restores half its HP. One strategy is to make it waste all it moves or, give it the asleep or frozen status condition.
Now that Mewtwo is nearly defeated, it's time to start chucking Poké Balls at it. Ultra Balls aren't guaranteed to work, so you'll likely have to throw quite a few before you can capture Mewtwo. If it heals himself, use your Pokémon to lower its health again before throwing more balls.
Mewtwo is going to be a strong addition to your party when caught! You can only get one in the game, so be careful not to release this creature.

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What Pokémon should I use to defeat Mewtwo?
Ishrak
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Ishrak is a Gaming & Video Expert specializing in sharing Pokémon and Minecraft videos. With over seven years of gaming and streaming experience, Ishrak has a follower base of over 30,000 YouTube subscribers and over 8 million views. He is also a Pokémon ROM-Hacker and some of his most popular videos highlight tips and advice for people learning how to play Pokémon games.
Ishrak
Gaming & Video Expert
Expert Answer
Try using a Bug-type Pokémon like Vivillon that can use Sleep Powder and knows not-too-damaging moves that can defeat Mewtwo easily. Dusk Balls work well since Mewtwo is found in a cave, though you can also use Dream Balls if you put the Mewtwo to sleep.
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Can you re-encounter Mewtwo?
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If you fainted it the first time, it will respawn after defeating the Elite Four again.
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How do I get to the place he is at?
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After beating the champion, you need to go back to Route 20, which is in Snowbelle City. He is located near the Pokemon Village.
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Tips

Go at night for Mewtwo's catch rate to be tripled when using dusk balls.
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If you think your team is not ready, don't do it. Mewtwo is not going to leave that cave unless you talk to him.
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Save before battling so you can reset if you fail.
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Warnings

Foul Play is super effective, but if you have a level 56+ Yveltal, don't use it.
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If you defeat Mewtwo instead of catching it, it will go away. Defeat the Elite Four again to make it come back.
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