- The Bus Came Back: The return of Diantha. She was actually looking for Ash and his friends after hearing about their part in the upcoming crisis as predicted by Olympia.
- Chekhov's Skill: All that physical training that Sanpei gave Ash come into play here.
- Epileptic Trees: In-universe, Diantha starts wondering just what kind of transformation is Ash-Greninja?
- The Last Straw: Mega Gardevoir near effortlessly escapes Team Rocket's restraints and blasts them off...only to faint afterwards. After her heated battle with Ash-Greninja, that little force of power was all she could take.
- Nonchalant Dodge: Mega Gardevoir spams this move, complete with Flash Stepping. At first it was considered an accomplishment Greninja could even land an attack on her, let alone overpower her.
- WHAM Shot:
- Ash-Greninja completing his transformation, to the shock of everyone present.
- Immediately after the above, Ash-Greninja's Water Shuriken colliding with Mega Gardevoir's Shadow Ball...and Water Shuriken wins, knocking Gardevoir off of her feet.
Recap / Pokemon S 19 E 25 Championing A Research Battle