Question

Is N back in black and white 2?

Comments

I Googled the new stuff in B/W2 and i do believe it made mention of N. i also believe Iris is the League Champion instead of Alder as well.

Answer 1

Near the end he comes back with his Reshiram/Zekrom wich merges with Ghethsis' Kyurem making Black/White Kyurem

Answer 2

Yep.

Source

Answer 3

In Pokémon Black and White 2, N returns to save Kyurem from Ghetsis
riding ZekromB2/ReshiramW2. When his legendary dragon is absorbed by
Kyurem to transform to Black KyuremB2/White KyuremW2, he pleads the
player to stop Ghetsis and get it back. On Route 23 on the way to
Victory Road, he will give the player HM05 (Waterfall) after the
player has entered the Hall of Fame, N's Zoroark will appear on
Victory Road and lead the player to the ruins of N's Castle, which N
and the player walk around. In the throne room, N asks the player to
battle him and his ZekromB2/ReshiramW2. When the player defeats him, N
reverts his dragon to its dormant state—the Dark StoneB2/Light
StoneW2—and gives it to the player to summon it at Dragonspiral Tower
to catch. After catching ZekromB2/ReshiramW2 and Kyurem, N appears in
Nimbasa City near the Rondez-View Ferris Wheel on Fridays. After
riding with him, he returns to the ruins of his castle, which now form
Victory Road for a rematch with different Pokémon depending on the
season