ANWSER First beat the elite four and get a national pokedex (get 60 Pokemon). Then go to one island and talk to Celio. He will ask you to find a gem called ruby. The ruby is in Mt.Ember where two Team Rocket Grunts were standing. Beat them, go to the cave, and get ruby. Bring it back to Celio.After that, go to ice cave at 4 island and help a Elite Four member, her name is Lorelli. Now go to 6 island and get a Pokemon that knows cut. There is a dotted door. Use cut then there are 4 holes. First, go up next, right then, go left and finally, down. Then, a scienctist will get the Sapphire before you and he will tell you the password of the rocket warehouse. Now you have to get out and go to 5 island. Go to the right and you will find the rocket warehouse door. Now beat admin then beat the sienctist and he will give you the sapphire. Take it back to Celio at 1 island. Give it to him. Then go to crealuen city, use surf, and the guy will be out of the way. Mewtwo will be hard to catch but it's powerful. Use your master ball. If you don't have one then save before and lower his health all the way down, put him to sleep, and use lots of ultra balls. If you kill him, restart and repeat.
There is no such thing as mewthree!!! only mewtwo and mew
Mewtwo, yes, if you have a FireRed or LeafGreen with Mewtwo.
Mewtwo doesn't learn Psybeam.
u cant get mewtwo in platinum. But, you can get him on: Firered, Leafgreen, ect.
mewtwo is in cerulean cave. the cave in in cerulean city, where misty's gym is. mewtwo in hard to catch, though.
There is no such thing as mewthree!!! only mewtwo and mew
You can find Mewtwo in the Cerulean Cave.
This is VERY debatable. Most say Mewtwo, Mew, Raikou, Entei, Suicune.
Unfortunatley, you cannot catch Mewtwo in Pokemon Ruby/Saphirre/Emerald. But you can trade it in from Firered/Leafgreen. Also, instead of asking on Answers for Pokemon questions, just go to Serebii.net
no, firered or leafgreen
You can get Mewtwo in the Cerulean Cave.
Mewtwo, yes, if you have a FireRed or LeafGreen with Mewtwo.
No migrate him from firered or leafgreen to get him.
mewtwo is in cerulean cave
There is no Mewthirty, there is only Mewtwo.
Mewtwo doesn't learn Psybeam.
you cant catch mewtwo in Pokemon emerald. to get it you must trade with either Pokemon firered or leafgreen.