No you cannot battle Ash in Pokémon Black 2 however you can battle Red (who Ash was loosely based off of) in the Pokémon World Tournament.
No, but you can import Platinum Pokemon to Black.
Yes
no
no you cannot but you can battle latias/latios
Contrary to popular belief, Ash is not Red. Therefore, you cannot find Ash in Pokemon Black 2. However, you can find Red at the PWT in the Champion League Tournament.
Yes
Yes
No, the Pokémon Trainer known as Red that appears in Pokémon Black 2 and Pokémon White 2 is not Ash Ketchum from the TV Show.
No, you can't. I'm sorry but you would have to battle between Black, White, Black 2, or White 2 or between X and Y (and possibly Z if Nintendo does so!)
As of 2013, there are no AR or action replay codes that can provide an instant win in the battle subway on Pokemon Black 2. A person must train their Pokemon in order to clear the level.
Well, with the games pokemon black 2 and white 2, there is a 2 years difference since the black and white story. So Ash would be older, but he doesn't ever seem to age at all! So I am pretty sure there is
no there is not