Greninja

Greninja was James' starter Pokémon in Pokémon X. As such, she was the first Pokémon to join James' team.

History
James chose to use Greninja in X because Froakie is his favorite of the 3 Kalos starters by a long shot and built his team around the Ninja Pokémon specifically.

Moveset

 * Surf
 * Ice Beam
 * Night Slash
 * Waterfall