‘I’m holding out a lot of hope’ — is it possible to get Mew in Pokémon FireRed and LeafGreen?

I went searching for Mew in Pokémon FireRed and LeafGreen, but is it actually obtainable? Here’s what I discovered.

How to unlock all legendary and mythical Pokémon in Pokémon Pokopia

There are 12 legendary and mythical Pokémon in Pokémon Pokopia, with some of them being visitors you'll only see in passing. However, you can actually recruit some of them to live on your island.
GameSpot

Pokemon Pokopia - How To Solve Mysterious Slate Puzzle And Unlock Mew

The world of Pokemon Pokopia is filled with exploration and treasure. While helping your Pokemon friends, you might've found ...
TheGamer on MSN

Where To Find Mew In Pokemon Pokopia

Mew is the last Pokemon in the Pokedex, and may well be the last Pokemon you find in the entire game.