Yes, he is in that cave you see right above Cerulean city. The only problem is the guy blocking it is only going to move after you beat the Pokemon league.
You can find Mewtwo in the Cerulean Cave.
70
trade from firered
No.
1. you cant catch mewtwo on ruby emerald or saphire<spelling mistake> you can migrate the mewtwo you catch on leafgreen or firered to migrate to platinum
no, firered or leafgreen
trade from firered or leafgreen.
Lv70
cerulian cave
Cerulean Cave
Mewtwo doesn't learn Psybeam.
mewtwo is in cerulean cave. the cave in in cerulean city, where misty's gym is. mewtwo in hard to catch, though.