How do you get Mewtwo in Pokemon Firered?
Beat the pokemon league with at least 60 pokemon caught in your pokedex. You’ll get the national dex. Go to one island, then mt. ember. As soon as you enter Mt. Ember, you’ll see two rocket grunts, beat them, and go in the cave they made. At the end of the cave, there will be a ruby. Give the ruby to Celio. Go to six island. At the end of the ruin valley, you’ll see a silver wall with braille, that needs CUT. Go in the cave, and ther’ll be more braille. I don’t quite know what the order is, but once you reach the bottom, you’ll find a sapphire, which is taken by a scientist. Go to five island, and then the rocket warehouse. When you beat everybody and get to the end, he’ll give you the sapphire. Give it to Celio. Now you can get Mewtwo at the Cerulean Cave, and trade with people from Sapphire and Ruby!
