The battle frontier has two kinds of symbols you can obtain. If you beat Palmer the first time around, you get a silver symbol. If you beat him the second time around-much harder- then you will get a gold symbol.
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you have to go to the battle fronteir after you beat the game
Well try to beat the battle tower cause its not like emerald its like ruby and Sapphire but when platinum comes its like emerald so beat the battle tower and ur done with the whole game.
Guess what you get a prize im not sure what but you also get to do something, if you mix records with an emerald version compete in the single battle portion of the battle tower and when you get to match number 7 look its you from ruby! Your name and your Pokemon are battling your emerald isn't that cool plus you will get to see what kind of trainer you are Example: Say you entered the latis and regirock and beat the whole battle tower in ruby when you mix records with emerald play emerald and you will battle those Pokemon you will be assigned a trainer so it will say ruin maniac ruby wants to battle or something like that.
you cannot ever beat the battle tower. but if you have completed the sinnoh pokedex then the battle tower will help you complete it. you can battle at the battle tower as long as you want.
== == Beat the elite 4, go to battle frontier, battle tower and then, go to the east an then, enter the house with the glass door. Talk to the girl and, trade her a skitty for a meowth. :)