You catch it in the Master ball that you got earlier in the game.
how did u get mew
There is no Mew in FireRed or LeafGreen.
There no Mew in firered.
You must capture Mew on Emerald and trade it to FireRed.
You can't get mew in firered or leafgreen.
you can catch him inside misy's gym but u need to stay there a long time
U can't unless you hack it (possibly ruining the game) or you live in japan
Its not possible to get mew in firered only emerald can via Nintendo event.
Mew cannot be found in firered only emerald can via Nintendo event.
use a gameshark or action replay u lazy bumb!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
mew
yes he is