The rarest you can get is groudon who is a fire-machine type pokemon.
The most rarest Pokemon card is original set kahangaskhan. Worth more then $1000 a piece.
The rarest is stantler.
Rubies are considered to be the second rarest gem. (The diamond is the first rarest gem)
you can't get the black flute in leaf green but you can in Pokemon ruby, sapphire and emerald then trade it to leaf green.
the rarest Pokemon in Ruby Sapphire and Emerald is Feebas
It is in the wild, anywhere. Whenever you change location (go into houses, etc) it will change place. You need to 'unlock' it before you can get it though.
If you have Sapphire, it's Latias. If you have Ruby, it's Latios. And if you have Emerald, you get to choose.
i said it is a idiotic ruby or a sneaky Sapphire
i never played Pokemon fire red but the rarest Pokemon IN fire red is obviously mew ... who ever wrote that is an idiot ... the rarest Pokemon is mewtwo ... mew can not be obtained in fire red ... and you get mew two by getting the ruby and Sapphire and then you go to cerlean cave to get mew two after u have completed the E4 and have gotten the ruby and Sapphire ... i hoped i helped
ABXY
Sadly, no. The creators of the game forgot to add in the Pokedex, so trading is impossible without GameShark. :(
use action replay