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Chapter 10: Post Game
Part 10: Post Game
Post Game
Now that we've completed the main story, there's a few more things we can do. Head downstairs and your rival will hint at a strong Pokemon in Cerulean Cave. This is Mewtwo, we'll be heading over to catch him shortly. Exit your house and you'll learn that you can now fly around the sky with either Charizard, Aerodactyl, or Dragonite. If you don't have any of these, we'll be getting an Aerodactyl next. You'll also be told about Master Trainers, who you can now challenge. Go ahead and skip to whichever postgame section interests you.
Getting Aerodactyl
If you don't have a Pokemon that can be used to fly in the sky, you can get an Aerodactyl fairly easily. Use Sky Dash to get to Pewter City. Head to the east side of Pewter Museum and chop down the tree here. Enter this side building and speak to the scientist in teh back to get the Old Amber. Now, use Sky Dash to fly to Cinnabar Island.
On Cinnabar Island, enter the Pokemon Lab. Enter the third door of the hallway here and speak with the scientist in the back-right corner of the room. Give him the Old Amber. In exchange, he'll turn it into an Aerodactyl and give it to you. You can now fly in the sky by taking it out of the Pokeball while it is in your party. When flying, you can freely move around Kanto floating above most obstacles. You'll be stopped by route gates and out-of-bound areas. While in the air, Flying-type Pokemon will spawn, including the rare spawns Charizard, Dragonite, Articuno, Zapdos, and Moltres.
Cerulean Cave
In order to catch Mewtwo, we must find him in Cerulean Cave. Fly to Cerulean City and surf or fly to Cerulean Cave to the west. Enter the cave and surf accross the water, hopping off to the south. Use a ladder to head up a floor here. In the next room, you'll find numerous items in Item Balls as well as many hidden in the sparkling patches on the floor. The items on the floor here can be quite rare, you can even find another Master Ball, and new spawns generate in time.
Head down the ladder in the top left of the room. Head down one more ladder and head to the right on this floor. Once you get to the body of water, surf left until you reach a platform. This is where you can battle and capture Mewtwo.
Catching Mewtwo
Approach Mewtwo to battle him. You'll need to defeat him within 5 minutes just like the other Legendaries. It's Lv. 70 and knows Recover and Psychic, so it can be quite difficult to defeat. Once you do, you can catch it like a normal Pokemon. It's quite difficult to catch, so it's a good candidate for the Master Ball, but it can certainly be caught without one. It can't run from you, so you don't have to worry about that.
Master Trainers
Another thing to do post game is defeat Master Trainers. There is a Master Trainer for each individual 153 Pokemon in the game, including pre-evolutions. When battling Master Trainers, each trainer can only use the specific Pokemon and no items. The opposing Pokemon will be leveled between 65-80; they can make for quite a challenge. A good battle to start with is the Master Trainer for your partner Pokemon. The Pikachu Master Trainer can be found in Viridian Forest and the Eevee Master Trainer is found on Route 17.
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