Usually you must beat the facility 3 times in a row to get to the frontier brain however for the pike it depends on how many rooms you enter.
4 or more
fifty battles to battle argenta and 170 to get a rematch
only one, at battle frontier
7
You have to get to get the national dex.
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21 battles also she has a luddicolo medicham and dusknoir so bring Pokemon that are strong against those types Hirothegood (The poster of this ?) says: Thanks! Glad I just got a new AR I can finally beat her with SELECT again!
The Battle Tents offer a look at most of the battles to be experienced in the Battle Frontier, and are only a way to practice for the it. There is no limit to the battles you can do.
therer is one that you get in the team magma hideout but you can get more if you give it to a Pokemon to hold and clone it. THIS ONLY WORKS IN EMERALD IN THE BATTLE FRONTIER
Battle Factory Brain: * Silver Symbol- 3x * Gold Symbol- 6x Battle Arena Brain: * Silver Symbol- 4x * Gold Symbol- 8x Battle Palace Brain: * Silver Symbol- 3x * Gold Symbol- 6x Sorry but that's all i know. wish you to finish it also you have to win at the tower three times before battling the brain
you battle in different ways and once you battle one of the five places so many consecutive times you face a frontier brain who are the best at what they do.
For almost all places you need to beat it 3 times in a row for the pike it depends on how many rooms you go in.