You have to go to island 1 and talk to the computer guy, then go to island 3 and beat up some team rocket peoples and then get past a bunch of wild slugma and stuff and you will find the ruby. Take the ruby back to the computer guy on island one and he will allow you to trade between ruby and leaf green.
There are none in Pokemon Ruby trade from FireRed or LeafGreen.
If you trade Pokemon between leafgreen and ruby ruby will have your leafgreen Pokemon and leafgreen will have the ruby Pokemon both in the party they will not be sent to the PC unless you personally walk to the PC and do so.
Pokemon Emerald: Birth Island Pokemon Sapphire: Trade from Pokemon FireRed, LeafGreen, or Emerald. Pokemon Ruby: Trade from Pokemon FireRed, LeafGreen, or Emerald.
Gastly is unobtainable in Pokemon Ruby. You need to trade one from Pokemon Firered or Leafgreen.
Any pokemon from Sapphire, Ruby, and LeafGreen
trade from Ruby/Sapphire
all i believe
trade from ruby/sapphire
You can trade between firered, another leafgreen, ruby, sapphire and emerald also Pokemon colosseum and Pokemon xd gale of darkness.
Impossible. But, you can trade from firered/leafgreen to ruby, or red to gold.
You cannot catch Registeel in Pokemon LeafGreen. This is due to FireRed and LeafGreen being able to trade with Ruby and Sapphire. Pokemon Ruby and Sapphire have the three legendary golem Pokemon including Registeel.
You can trade with another sapphire, ruby, emerald, firered, leafgreen, Pokemon colosseum, Pokemon xd gale of darkness and Pokemon box ruby and sapphire.