you can't catch him on sapphire but you can on emerald.
you cant on sapphire. but u can trade them from a fire red or leaf green Pokemon game
mewto
You can catch MEWTWO ,not Mewto, at the end of Cerulean cave
There are no way to get mew in Pokemon fire red... You can only get him in rubby/sapphire.... Unless.. You will use game shark codes>.
if you mean mewtwo you can get it if you beat the elite four and get the ruby and sapphire and give them to celio on one island. you have to go through the cerulean cave above cerrulean city. it will be level 70
I don't really know but i think you have to have an Action Replay to get mewto lr you have to transfer it from an older Pokemon
action replay
Unfortuenetly u cant catch mewto on emerald only on fire red.green and dimond and pearl! SORRY SUCKERS!!!!!!!
no
PIKACHU
Yes
trade it