- Box Office Bomb: If the last movie's performance was bad, this movie's is even worse, grossing only ¥1.06 billion ($9.9 million) by its third weekend, with less than a million admissions (for comparison, Hoopa made ¥1.35 billion ($11 million) with 1.26 million admissions by then).
- Celebrity Voice Actor: In the original Japanese version, Volcanion is voiced by kabuki actor Ichikawa Somegorō VII, Kimia is voiced by veteran actress Mayu Matsuoka and Raleigh is voiced by singer Shoko Nakagawa.
- Franchise Killer: This movie's poor performance put the kibosh on any further Pokémon movies set in the anime continuity. All future movies would be set in an alternate timeline, starting with the following one, Pokémon: I Choose You!.
- I Knew It!: From the moment the first plot synopsis was revealed, and with it Volcanion's hatred of humans, everyone proclaimed Volcanion would change his mind by the end. Months later, they were proven right. Then again, this plot has already been explored multiple times that it's easy to predict the end.
- In Memoriam: The dub is dedicated to Eric Medalle, who designed many of the logos for the shows and games, and died in March 2016.
- Playing Against Type: Volcanion's English voice actor is Mike Pollock. Yes, Dr. Ivo "Eggman" Robotnik plays a character who fights against a Mad Scientist who lives in a city of machinery.
- Spoiled by the Merchandise: If you get the movie's soundtrack (the tracklist of which was released before the movie itself), you get treated to a track titled "Volcanion Dies?".
- Trolling Creator: While more of a Trolling Seiyu, but Satoshi / Ash's Seiyu, Rica Matsumoto, reminded everybody that Ash is still ten years old during a pre-movie interview.
Trivia / Pokémon: Volcanion and the Mechanical Marvel