Things You'll Need
Instructions
Obtaining a Johto Starter in "Pokemon Emerald"
Insert "Pokemon Emerald" into a Game Boy Advance and load your saved file.
Defeat the Elite Four and the Hoenn League Pokemon Champion in "Pokemon Emerald."
Complete the Hoenn Pokedex by collecting entries for 200 species of Pokemon in "Pokemon Emerald."
Travel to Professor Birch's laboratory in Littleroot Town.
Talk to Birch. He will allow you to choose one of the starting Pokemon from the Johto region.
Opening the Trade Network from "Pokemon Leaf Green"
Insert "Pokemon Leaf Green" into a separate Game Boy Advance and load your saved file.
Return the Ruby item to Celio on Knot Island.
Return the Sapphire item to Celio. He will open up a trade network that allows you to trade Pokemon between games.
Trading the Johto Starter to "Pokemon Leaf Green"
Connect the two Game Boy Advances together with the Nintendo Wireless Adapters.
Go to the Direct Corner of a Pokemon Center in "Pokemon Leaf Green."
Travel to the Direct Corner of a Pokemon Center in "Pokemon Emerald."
Trade your chosen Johto region Pokemon from "Pokemon Emerald" to "Pokemon Leaf Green."