find all the legederys
you have to beat the battle frontier brain
Get all of gold symbols from Battle frontier.
nothing happens. you just beat the battle frontier that's all.
Battle them and Beat them.
You need the simbols
Go to the S.S tidal after you beat the league and it will say Battle Frontier
beat the frontier brains
It is at the battle frontier after you beat the eliete 4.
You can get to the battle frontier after you beat the Elite Four
you half to beat the elite four and go in the ferrie in lilycove and click on battle frontier
after you beat a certain amount of challenges you will battle a frontier brain which is sort of like the gym leader. if you beat them you get a symbol
You can't beat the frontier. Mostly because they just see how long you can keep winning in each of the battle areas.