This was the final Pokémon film to be dubbed into English by 4Kids Entertainment. The company later went bankrupt in the early 2010s due to an infamous Yu-Gi-Oh! lawsuit. Beginning with the next film, The Pokémon Company International would take over and most of the voice actors would be replaced, much to the disappointment of the fans.
Many fans of the Pokémon franchise consider this film as the final trivial aspect of the franchise as a whole. This was in part due to the abrupt replacement of the entirety of the voice cast after season 8, as well as being the final film to be dubbed by 4Kids Entertainment. From season 9 onward, many original fans lost interest in the series and looked into other anime.
The Rota castle is based on Neuschwanstein, a castle in Allgäu, Bavaria, Germany.
In this movie, Regice was pronounced as Rej-i-ice and , Bonsly is pronounced Bonslee. However, in Pokémon: Battle Frontier, both Pokemon's names were pronounced as Rej-ice and as Bonsl-*y* respectively.