you have to focus on just one place and keep beating that place a lot of times then you get to go againts the brains
by knocking out all his/her Pokemon
kill all her pokemon.
you fight it and defeat it w/ ur Pokemon
The Frontier Brains and the Champions.
articuno , zapdos or moltress
use the move nuclearbomb
beat the frontier brains
With a Budew.
Just get STRONG Pokemon
go to the Pokemon league and defeat them
First you have to get every pokemon in every game. Next you have
use a flying , poison or flying Pokemon