The official Pokémon movie blog has updated. Translations of the new entry follows:
Appear! Movie Details #3: "Mary"'s Model Sheets Appear!
![](//media.pocketmonsters.net/news/2218/settei_003a.jpg)
![](//media.pocketmonsters.net/news/2218/settei_003b.jpg)
Mary, the girl who grew up together with Hoopa. Barza's younger sister.
She is played by Shoko Nakagawa.
Source:
http://www.pokemon-movie.jp/pokemovie_ch/?p=326