XY118: Championing a Research Battle!

- (サトシ対チャンピオン・カルネ！VSメガサーナイト！！) is the 25th episode of Pokémon the Series: XYZ.

Synopsis
Ash and his friends continue their journey towards Snowbelle City in order to get the final badge. Suddenly, out of the blue, Kalos' champion, Diantha, appears from a helicopter in the sky.

Trivia
"Pokémon Quiz:" Mega Gardevoir (JP)