Yeah, the Brain's main contribution is planning, and while Mallah is his muscle, his muscle (and standard weaponry) doesnt count for much in this fight.
Houngan could cause a lot of damage...given something to work with.
Thats 3 that work best with prep.
Why isnt Phobia in this fight, though? She was a BoE member, and would go a long way to evening out the odds here.