umm... you dont need to hack. just go to the poke transfer lab. buuut you need two games, and two ds gaming systems. and you get to transfer your old pokemon from the other games.
Well its possible but you need to understand how to code and hack Pokemon games. Which is extremely hard...
you will need action replay, game shark, and some other hack thingy.
YO NEED AN ACTION REPLAY. IF you do you can use pokesave. You can learn to hack various video games for pretty much any console, at GameHacking.org (see Related Links below).
to play as a Pokemon you need Pokemon Mystery Dungeon.... Red Rescue Team Blue Rescue Team Shadows of Darkness Shadows of Time or a special Pokemon Hack.
Walking through walls is a hack. You'll need an Action Replay to acsess this ability.
to hack different games you need different kinds of tools. You can hack NDS, VBA, and GBC roms. For hacking tools go to the link below: http://wahackpokemon.com/en/download/tools-gba
u need to hack
You may only hack the device to get that Pokemon.
In Pokemon firered and leafgreen mew is not in wild , only event or you can use gameshark codes or YOU CAN HACK THE GAME !! THIS is even for AAALLL POKEMON GAMES only event or hack or gameshark
No. It is either fictional or a fan hack, but that pokemon doesn't exist in the legitimate Pokemon games.
There are several, see the related link for more information.