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Nobody I know of has tried to face E4 members yet Maria (same goes for brains. I'm just a sub for the flying gym until we get someone else to take its place. Ah well...I've only lost once and won a lot.)
Also, VulpixPrower, don't double post. To answer, only someone who has been noted as an extremely good battler can get access to a brain. There's a couple other requirements as well, I believe.
the water leader (Beachboy or Venks, don't know which one is the official leader as of now, so SSK, you might wanna update that.) isn't on right now. If you need the flying badge, I can let you challenge me for that one.