you have to get him after you get all 16 badges in johto and kanto and he should be there in cereuleaun city at cereuleaun cave.
mewtwo is in kanto it is in cerulean cave
Yes, Mewtwo, Latios and Latias will be in HeartGold and SoulSilver.
Cerulean Cave.
Cerulean cave
Cerulean Cave
Yes in the Cerulean Cave.
Nope!
it is in cerulean cave at level 70
You can't,but you can get mewtwo!
In Ceurelean City Cave there is Mewtwo.
mewtwo
mewtwo i believe is in the Cerulean cave, just go down the ladder and i think he is right there