He flees to another reigon in search of a strong trainer.
Pokémon depending on the season.
After catching or knocking out Zekrom B2 /Reshiram W2 , N arrives to:
> congratulate the player and informs that Kyurem has returned to the
> Giant Chasm. From then on, N will appearin Nimbasa City near the
> Rondez-View Ferris Wheel on Fridays. After riding with him and having
> caught or knocked out Kyurem, he returns to the ruins of his castle,
> which now form part of VictoryRoad, for a rematch with different
> Pokémon depending on the season. Spring Water. Summer Fire.
The battles are hard and he sets up his weather instantly using his lead Pokemon.