This movie introduced several "firsts" and rare elements for fans of the franchise:
For the first and only time in a Pokémon film, Ash is briefly possessed by an evil entity when he touches the Prison Bottle. Exclusive Home Media Extras
The small, innocent form that loves pranks and treats like donuts.
Pokémon the Movie: Hoopa and the Clash of Ages is the 18th film in the Pokémon franchise and the second installment in the Pokémon the Series: XY era. Released in Japan in July 2015, the film is known for featuring one of the most extensive rosters of Legendary Pokémon in the series' history.
Pokémon the Movie: Hoopa and the Clash of Ages - Apple TV
The film holds the record for featuring the most Legendary Pokémon in a single movie. This includes heavyweights like Lugia, Latios, Latias, Dialga, Palkia, Giratina, Kyurem, and Arceus.
