You can only fight him at the PWT, south of Driftveil, as part of the the Champions Tournament.
Sorry but no. Maybe they will have a fight with N in Pokemon BLACK WHITE 2
In N's Castle where Zoroark went
after pokemon black and white there is two more that i know of 1.black and white emerging towers 2.black and white red seires
yes if u want 2 fight him again
Black Kyurem is in Pokemon Black 2.
The third and last time you fight him is at the Viridian Gym. He is the leader.
Pokemon Black 2.
If you are playing the first black and white: Dark,Fight,Psychic and Ghost pokemon!! In black and White 2 i don't know
No there is not a trainer editor in Pokemon black 2 or Pokemon white 2
4 because the sell pokemon white and pokemon black and know they sell pokemon white 2 and pokemon black 2
Yes you can battle the elite four and the champion as many times as you want
Zekrom. It is Pokemon White's mascot, NOT Pokemon Black's, as a common and logical error states BUT its vise versa in pokemon black 2 and pokemon white 2 so if u want to get a zekrom (advise: hes better) i suddegest pokemon black 2 but pokemon white 2 is a better game