I don't think you can get Mew in Pokemon FireRed at all. You have to trade a Mew from Emerald. You can go to http://www.serebii.net/pokedex-rs/151.shtml to see what I mean.
It isn't possible to catch mew in Pokemon diamond. You need an action replay cheat cartridge.
Pokemon number 151 is Manaphy - you can only see it by reading the book on the table of Mr. Backlot's room (far right door) in the Pokemon Mansion. Mew is, as far as I know, unobtainable apart from with an Action Replay in Platinum. I'm sure I can conjure one up though, so if you're that desperate for a Mew exchange friend codes and I'll send you one if it lets me.
THERE'S NO POKEMON THAT YOU CAN BREED 2 GET MEW...VERONICA
It is manaphay and I will tell you how to see it. First go to the Pokemon mansion and you now the book behined the mansion owner you can read it and it will ask you if you whant to look in side you say yes and it shows you a pic of manaphy. And that is how you get manaphy.
you can get one from cheryl or go to the Pokemon mansion and talk to one of the maids their you can get one from cheryl or go to the Pokemon mansion and talk to one of the maids their
There no Mew in firered.
it is mew and mewtwo with a masterball
You cannot get Mew through normal game play on Pokemon SoulSilver.
Yes, Mewtwo can be caught in Cerulean Cave. As far as Mew is concerned, only hints about it's existence can be found in the Pokémon Mansion at Cinnabar Island. There is no way to catch Mew in Pokemon FireRed of LeafGreen. You have to trade it.
To get a Mew in Pokemon Heartgold, you could do it through a Nintendo Wi-Fi event.
You can't. Sorry. You have to go to the Unknown Dungeon in Fire Red/Leaf Green.
After getting the National Dex, go to Route 229 and there will be MEW floating above the pond, I think he is there because it resembles a similarity to Faraway Island in Pokemon Emerald and it is a rainforest and MEW lives in the rainforest because of the book entrys in the Pokemon Mansion in FR/LG: Deep in the rainforest, we discovered a new pokemon, we cristended the newly found Pokemon as "MEW". Happy hunting :)
Mewtwo is in cerulean cave, and you can only get Mew through an event.
Through events or putting 999 Pokemon in "My Pokemon Ranch."
Go to the Celadon Pokemon Center and go around behind it. Keep going through that little path and you will reach the backside of the pokemon mansion. You will notice a door, so you'll need to go through it to get into the pokemon mansion
Go through doors
You cannot catch a mew. You can only get it through events or cheats.