two words: YOU HACK
you cant
No, you can only get all starters without trading in Pokemon yellow, but Leaf Green is a newer version of Pokemon green, so it's impossible.
By trading the other starters with other players of Diamond or Pearl.
The only 2 ways to get johto starters is to see all Pokemon in emerald, and beat mt.battle in Pokemon XD and then send them to ur gameboy adv.
you cant get him without trading
you dont you have to get them through a trade or you could just get the same one from breeding at the daycare
You can not get him without a gameshark or trading in emerald.
Pokemon Emerald 386 is a hacked version of Pokemon Emerald that allows you to complete the pokedex without trading and/or hacking. It's a ROM that can be played on a VBA. You can get it at 4shared.com.
It is not possible to get all three starters in Pokemon LeafGreen without trading. This was an intended mechanic to encourage interaction between players.
That's impossible.
You can only get one of the three Starters in Pokémon Emerald without use of cheating or trading. You can trade or use an action replay code to get all three (I don't know the code, so I can't help you there). Hope this helped.
a bunch