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I just came back from the Hoopa movie dub.
Here are the basics:
Mary is named Miray (pronounced Me-yer-ray, not sure on spelling as no cast list) her voice was OK.
Barza is named Baraz, same voice as the trailer
Hoopa's catchphrases are "Ahlay-Hoopa-Ring" when it summons things and "were you surprised?" when it pranks or otherwise uses its powers on someone. It's dub voice is not great, but better than the one in the first trailer. Hoopa Unbound's dub voice is shit though.
This shot of Mary crying isn't in the dub, though I don't know if it was ultimately in the Japanese version either.
The ending credits song is decent, but not even remotely as good as the Japanese ending. Haven't heard the Japanese movie music in a long time, so I don't know if it was replaced or not.