If i am not mistaken you will be playing on your ds.
If you are then you need to do the following(not important):
*Level up Pokemon to lvl 100 and make the strongest team possible.
*When you get the strongest team,then comes the exiting part,Wi-fi(go to www.Nintendo.com to see how it works)Use it to challenge the world.If you keep on winning then you should go to Nintendo events and participate in tournaments.
*Last but not least ,Become the champion.
raikou suicune and entei.
When you have got the galactic key from the warehouse then you need to go to the other side where you got the warehouse key.use the galactic team to open the door and then you need to find out where the boss is located.then u free the 3 legendary pokemons!
you cant't neccissarily battle, but on Pokemon Diamond and Pearl if you and your friend are underground you can break into their base, steal their flag, and run it back to your base and store it on your computer (meeting people underground will get you a chance of catching spiritomb). Its Pokemons version of Capture the Flag.
Train it on pokemons...du'uh. go to the Pokemon league alot and kill the pokemons and lvl up...
at www.serebii.net
In general, there are 6 legendary Pokemons in Emerald. If you count the Event Pokemons in Emerald, then there are 12 legendary Pokemons in Emerald.
how do you get legendary pokemons how do you get legendary pokemons
Does not exist.
after catching all the pokemons
Articuno, Lugia, Ho-oh and Mewtwo are the Legendary Pokemons
you to have all the legendary pokemons
raikou suicune and entei.
I think , all of the legendary pokemons.
Keep catching pokemons!
Go catch some other pokemons Try catching Rayquaza.
Zaptos Motries and articuno and mewtwo
All the legendary Pokemon are in the city figure it out and don't all was use this website for Pokemon ok. and it will actually cost 5 dollars to know were all the legendary pokemons are ha haha just kinnding all the legendary pokemons are in the middle of the island