no
in Pokemon centers
You cannot get all 3 Starter Pokemon in Pokemon Emerald without trading for the other 2.
All if you have a gameshark
you have to find and catch all the pokemon in emerald....it might take a little trading...
By trading, catching, and raising pokemon. It will take some time.
Buy an Action Replay at a store.
You can't without trading from other games or cheats.
Get Pokemon emerald and then you can get all three without cheats or trading
All the 150 Kanto Pokemon exist there as well as a good bunch of Pokemon from Gen 2 and 3. You can't get all of the Pokemon without trading with somebody with Pokemon Emerald.
Cyndaquil and all other pre-fourth generation starters are unavailable in Pokemon pearl and diamond. You must transfer it from Pokemon Emerald. If you do not have Emerald, sign up on a Pokemon trading forum and find someone who is willing to trade you one.
Pokemon Emerald Enhanced is a hack of Pokemon emerald. The most special thing about it is that all Pokemon are available somewhere in the game. No trading or gamesharking is necessary. Toward this end, a few new areas have been added as well. As a final note, the three starter Pokemon for this hack are Zapdos, Articuno, and Moltres.
Trading or with a gameshark --- You can not get all the 386 Pokemon by simply owning just one game. In order to get the rest you need to trade with Fire Red, Sapphire, Ruby and Emerald.