The Super Mario Galaxy Movie is only a little more than a month away from hitting theaters, as its release date has been moved up to April 1, 2026. When it comes to new character reveals, at least major ones, it feels like we've seen everybody we need to see. Except a theater chain in the UK potentially just spoiled the appearance of another big character from the Mushroom Kingdom - Wario.

The Japanese version of The Super Mario Galaxy Movie trailer appeared a few weeks after the English one, and it revealed Maaya Sakamoto will be the Rosalina voice actor and Daiki Yamashita will play Bowser Jr. They join returning cast members like Mamoru Miyano (Mario) and Arisu Shida (Princess Peach). The film debuts in Japan on April 24, 2026.

Both Maaya Sakamoto and Daiki Yamashita are well known as voice actors ahead of their appearances as Rosalina and Bowser Jr in The Super Mario Galaxy Movie. She’s a voice actress and singer, with some of her most notable parts being Aerith in FFVII, Aigis in Persona 3 (including Reload), Lightning in FFXIII, Mari in Evangelion, Rem in Trigun, Echidna in Re:Zero, and Akito in Fruits Basket. Meanwhile, we can hear him as Deku in My Hero Academia, Sakamichi in Yowamushi Pedal, and Mafuyu in Sakamoto Days.

Here’s the version of The Super Mario Galaxy Movie trailer with Japanese voice acting and, while we get to hear Daiki Yamashita as Bowser Jr, we don’t get to hear Maaya Sakamoto as Rosalina yet. 

As a reminder, we already knew the cast for the English version of the movie. All actors from the original installment will return for the film, with Brie Larson joining as Rosalina and Benny Safdie showing up as Bowser Jr. 

The original Super Mario Movie is available now physically and digitally, and The Super Mario Galaxy Movie will appear in theaters in the US on April 3, 2026 and in Japan on April 24, 2026. 

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