save before battling it and then parylize it or put it to sleep and lower its health as much as you can. if it faints or defeats you, turn the game off and try again
You can't get mew in firered or leafgreen.
Its not possible to get mew in firered only emerald can via Nintendo event.
You can't catch it on Firered you can only catch it in Emerald
Pokemon firered emerald
Cerulean cave
Nope, you have to trade him.
sadly,no
The Cerulean Cave
can't but you can get one from emerald if you have the old sea chart and catch mew at faraway island.
No, you to migrate it from Pokemon firered/leaf green.
This is VERY debatable. Most say Mewtwo, Mew, Raikou, Entei, Suicune.
Unfortunately, Mew is not a catchable Pokemon in FireRed. It is impossible to catch it without a Cheating Device. Sorry, The interwebs fooled me, too.