XY051: When Light and Dark Collide!

- (ルチャブルとダークルチャブル！) is the 51st episode of Pokémon the Series: XY.

Synopsis
Ash unknowingly disrupts a play rehearsal, sending its star Gallade out of commission. Ash's Hawlucha and the odd-colored Hawlucha "villain" must work together to get the play back on track, until Team Rocket appears.

Trivia

 * "Pokémon Quiz": Hawlucha (shiny, JP)
 * Like in "Sky High Gym Battle!", Ash's Flying-type Pokémon, Swellow, encounters its shiny counterpart, Winona's.