You can only fight him at the PWT, south of Driftveil, as part of the the Champions Tournament.
In Pokémon Black 2 and Pokémon White 2, in order to unlock the Rental Masters tournament, you need to defeat the Rental Tournament as well as the World Leaders. In order to unlock the Mix Master tournament, you need to defeat the Mix Tournament and the World Leaders.
In Pokémon Black 2, in order to get to the Champion Cup or the Pokémon World Tournament's Champions Tournament, you will need to defeat the Worlds Leaders tournament a minimum of 10 times. The World Leaders tournament will be unlocked once you have beaten the Kanto Leaders, Johto Leaders, Hoenn Leaders, Sinnoh Leaders and Unova Leaders tournaments.
Alder and Cynthia(from platinum)
PWT stands for Pokemon World Tournament. It can be found south of Driftveil City in Pokemon Black 2 and White 2.
The League champion in the games are N, the Team Plasma king. Also there is Alder the Pokemon black and white champion
no you must poketransfer platinum Pokemon from the game to black/white. just like pal park: beat elite four to unlock
you have to do a global trade with people from different countries each country will unlock a floor
The Pokemon World Tournament (PWT) can be found by exiting Driftveil City from the south and following the path.
Beat the elite 4 for the first time.
Without cheats you cannot unlock every pokemon to catch in the wild. Black and white 2 along with every other pair are designed to force people to buy both games
So it can be sent to Pokemon Black and White to unlock TM 95