How to Catch Mewtwo in Pokémon FireRed and LeafGreen

This article was co-authored by Madeleine Flamiano. Madeleine Flamiano is a Role-playing Game Enthusiast based in Berkeley, California. She has over 20 years of gaming experience and is an avid gamer in all parts of her life—she’s especially fond of tabletop board games and the world of Pokémon. Pokémon Crystal Version is her favorite game in the franchise. Some of her greatest feats were evolving Eevee to a Level 99 Umbreon and collecting every legendary bird Pokémon. Her professional path started at NaNoWriMo, where she scripted a summer-long world-building series and hosted its Virtual Write-Ins. She has written seven books for DDCO Publishing, which specializes in LitRPG and is operated by New York Times Bestseller JA Cipriano. She has ranked in the Top 100 list for Dark Fantasy, Sword & Sorcery, and Fantasy Romance. She was voted by her peers as “The Perfectionist” on Roleplay Adventures, a SERP for forum roleplaying. Madeleine graduated from Mills College with a B.A. in English with a concentration in Literature and a Minor in Philosophy.

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Mewtwo is said to be the strongest Pokémon in the game. Because of this, it can also be the hardest Pokémon to find and catch. Here are some simple steps on how to catch Mewtwo and become one step closer to being a Pokémon Master!

Steps

1. 1Beat the Elite Four. You cannot get Mewtwo until you defeat the Elite Four and become the Pokémon champion, you can catch Mewtwo after fulfilling the quest in One Island..
2. 2Obtain the National Pokedex from Professor Oak. You will need to have captured sixty Pokémon before he will give it to you.Advertisement
3. 3Fix the Network Machine by finding the Ruby and Sapphire (see below).
   • If you are playing Red, Blue, Yellow, Gold, Silver, or HeartGold, SoulSilver, then you can go directly to the cave in Cerulean City.

Get the Ruby

1. 1Go to Island 1. You will need a Pokémon who knows Surf to do this. Speak to Celio and he will explain that you need to find an item for his machine.
2. 2Go to the entrance of Mt. Ember. On the lower right side of the area, you will see some Team Rocket members. You will hear the first password to the Rocket Warehouse. Battle them, and enter the cave.
3. 3Proceed all the way down to the bottom level. You do not need to read any of the braille charts. You will need a Pokémon with Strength to get through the cave.
4. 4Pick up the Ruby and exit. You can either use an escape rope, use “Dig” or exit the way you came in.

Get the Sapphire

1. 1Go to Island 6 and find the Dotted Hole, which can be seen on the Town Map. At the entrance, read the braille sign. It will say “Cut,” so you make sure you bring a Pokémon who knows Cut.
   • If you have not yet saved Lorelei from Island 4, a scientist will be blocking the way.
2. 2Inside the cave, look at the braille signs. They will tell you which hole to fall down. If it has 2 symbols, it means go up. If it has 5, then it’s right. If it has 4, then it is either left or down. If you mess up, you will have to start over again.
3. 3On the bottom level, you will see the Sapphire. Don’t get too excited; a super nerd will take it first. He will then give you the second password for the Rocket Warehouse.
4. 4Go to the Rocket Warehouse, found on Island 5. You will need to defeat all the Team Rocket members to get to the boss.
5. 5In the final room, you will find the super nerd who stole the Sapphire. Battle him. When you beat him, you will get the Sapphire.
6. 6Travel to Island 1. Give the gems to Celio, the man who operates the machine on the island. He will connect the regions of Kanto and Hoenn by signal and open up the way to Mewtwo.

Finding Mewtwo

1. 1Go to Cerulean City. At the top left corner of the town, you will see a cave that is now open. Travel north to Route 24 and use a Pokémon to Surf to the entrance.
2. 2Inside the cave, you will need to navigate the maze to the bottom floor. Make sure your Pokémon team is at a high level; there are a lot of strong Pokémon here (levels 46-70).
3. 3At the end, you will see Mewtwo. Save your game before battling him, as this is your only chance to catch him and he is very powerful. See the Tips section for some methods of catching Mewtwo. You should bring at least 50 Ultra Balls.

Community Q&A

• QuestionHow can I catch Mewtwo easily in Pokemon Fire Red without a master ball?Natalie TellecheaTop AnswererWith a very strong Pokémon that knows False Swipe.
• QuestionHow do I catch Mewtwo without losing the Elite Four?Community AnswerYou can’t. You must defeat the Elite Four before catching him, as it certifies you are strong enough to enter Cerulean Cave.
• QuestionWill Charizard work in Indigo Plateau?Community AnswerYes, you can battle the elite four and become the Pokemon league champion with Charizard as one of your Pokemon.

Tips

• Save prior to the battle and restart until you succeed.⧼thumbs_response⧽
• Inflict some status effect on Mewtwo. Freeze and sleep work the best, but others like paralysis can work as well.⧼thumbs_response⧽
• If you want to save your Master Ball, stock up on Ultra Balls (around 70). Timer Balls can also be effective, for their success rate increases the longer the battle goes on. Mewtwo can be caught with these, but it is very difficult.⧼thumbs_response⧽

Warnings

• Save your game. You can only try to catch Mewtwo once.⧼thumbs_response⧽
• Some Pokémon in Cerulean Cave (AKA Unknown Dungeon) won’t let you escape/run, so be careful!⧼thumbs_response⧽
• You can get easily disoriented in the Cerulean Cave; consult a map if you need help navigating.⧼thumbs_response⧽
• Max Repels do work on the Pokémon in the cave. However, if your active Pokémon is a lower level than the wild Pokémon, the Repel won’t work. For best effect, put your strongest Pokémon in the active slot.⧼thumbs_response⧽
• Don’t be confused with Mew.⧼thumbs_response⧽

Things You’ll Need

• Pokémon who knows Surf
• Pokémon who knows Rock Smash
• Pokémon who knows Strength
• Pokémon who knows Cut
• Pokémon who knows Fly (Optional)
• Master Ball or at least 70 Ultra Balls or 20 Timer Balls
• Team of Pokémon levels 65-100 (recommended)

About This Article

If you want to catch Mewtwo in Pokemon FireRed and LeafGreen, first collect the ruby from the cave in Mt. Ember on island 1. To do this, battle the Pokemon you find there and make your way down to the lowest level. Once you’ve found the ruby, go to the Dotted Hole on Island 6 with a Pokemon that knows Cut. Follow the signs in the cave to go to the bottom, where you will see a super nerd steal the sapphire. Then, make your way to the Rocket Warehouse on Island 5, battle all members of Team Rocket, and retrieve the sapphire from the super nerd. After you’ve gotten the sapphire, travel to Island 1 and give both of your gems to Celio, who will open the way for you to get to Mewtwo. In order to find Mewtwo, go to the open cave in the top left corner of Cerulian city, use a Pokemon to surf to the entrance, and make your way through the maze. At the end, you will see Mewtwo. For tips on what to do before battling Mewtwo, keep reading!

Reader Success Stories

• “Thank you, I’ve spent the last 24 hours playing LeafGreen. All I need is Mewtwo. “