While battling Wattson, Amber swapped Pelipper for Nincada, who continued taking damage from Manectric. Nincada resisted Manectric's Roar, since Amber had no other Pokémon available to him at that moment. Still, Nincada evolved into a Ninjask, and, unknown to Wattson, into a Shedinja as well.
Ninjask continued attacking Manectric. Just as Ninjask went to use Double Team, it got slammed to the ground and electrocuted by Manectric's Thunder. However, Manectric fainted as well.
None of Ninjask's moves are known.