Mewtwo? Plus you cannot get Mew in Leafgreen or Firered.
You can't get mew in firered or leafgreen.
mew and mew two
mew and mew two
There is no Mew 3.
You can't catch mew on leafgreen you need gameshark codes for that
No.
Mew two
Mewtwo, yes, if you have a FireRed or LeafGreen with Mewtwo.
Mew has to be traded from emerald and ho-oh you have to get from Pokemon colosseum.
Cheatcodes or luck.
Mew was distributed at an event once, but that is long over and sadly if you want a mew in leafgreen now, you'll need help from other games or you could use cheat codes.
you can not get mew without the mew glitch but if you go to the end of cerulean cave you can get mewtwo