no there isn't that is unless you were to hack your game and put it in there
No Mewthreex will not be in Pokemon Black or Pokemon White because it doesn't exist and so far will not exist.
mewthreeX
no
Yes you can trade leafgreen version Pokemon to another leafgreen version.
im srry dude but you cant its just a made up Pokemon that dude did it a compination of different Pokemon see ya peace
Not in Pokemon leafgreen only in Pokemon Firered never ever in Pokemon leafgreen And in Pokemon firered it is rare in power plant not available in Pokemon leafgreen?
MewthreeX is only available on hacked roms and there is no ar code for it.
A made-up Pokemon that someone hacked into the game and posted on youtube, you cannot find or obtain it in an unhacked version of the game
you should go to gamestop
On Pokemon Pearl's title screen, if the Pokemon LeafGreen game is in the GBA slot, click on "Transfer From LeafGreen" and you can choose six Pokemon from LeafGreen to transfer to Pearl, but be careful-you can't trade them back.
HelloSorry to say but you cant trade Pokemon from pearl to leafgreen but you can migrate Pokemon from leafgreen to pearl via the pal park
Manaphy is a legendary water type of Pokemon. It is not possible to get this Pokemon in the game Pokemon LeafGreen.