There is no 9th gym. There is only eight
Driftveil City. Gym Leader Clay!
No.
Hackless, NO!
Its best if you use fighting type pokemon. black- Sawk would be your best to use to beat the gym white- Throh would be your best to use to beat the gym.
The middle right
there is no 9th gym
9TH TRAINER!? Never heard before but if you talking about gym leaders there's no 9th gym leader
Yes, like any regular Pokemon game, Pokemon black and white still has gym battles.
in the museum
the seventh gym is at sekka city
Driftveil City. Gym Leader Clay!
You Cant
Herdier and Watchog.
I used fighting type (Timburr) and obliterated the gym
You cannot.
in castelio city...?
Hackless, NO!