You need the Old Sea Chart from an event but it is over. You can cheat it but I realy don't recomend that.
u take mewtoo from pokemon leaf green or fire red trade it to emerald then go to a breeding place and put mewtoo and ditto in the breeding place and u should get a mew
cheat.
Not at all mew is an event Pokemon for Pokemon emerald.
a
you have to cheat
Mew does not evolve, Mewtwo is a completely different pokemon.
You need to trade Mew from Emerald
mew
rayquaza and mew!
Mew has to be traded from emerald and ho-oh you have to get from Pokemon colosseum.
You must capture Mew on Emerald and trade it to FireRed.
Mew can be migrated from Pokemon Emerald if that game was participated in the Japanese Mew event to get the Old Sea Map or have 999 Pokemon in Pokemon Ranch and Hailey will give you Mew.
yes migrate it
Gameshark or action replay