7 Cosmic Secrets About The Super Mario Bros. Movie 2 (The Super Mario Galaxy Movie) You Need To Know Now

The Super Mario Bros. Movie 2 is arguably the most anticipated animated sequel of the decade, following the monumental success of the 2023 original, which gross shattered box office records and proved the viability of a cinematic Nintendo Universe. As of today, December 18, 2025, while official press releases remain tightly controlled by Nintendo and Illumination, a wealth of highly credible leaks, rumors, and director hints have painted a clear picture of what fans can expect from Mario's next cosmic adventure, which is now widely believed to be titled The Super Mario Galaxy Movie.

The sequel promises to dramatically expand the scope of the Mushroom Kingdom, launching the beloved plumber and his friends into the stars. From a confirmed 2026 release date to the rumored introduction of fan-favorite characters like Rosalina and the mischievous Bowser Jr., here is a deep dive into everything we know about the next chapter in the Super Mario Bros. saga.

The Super Mario Bros. Movie 2: Confirmed Production Details and Core Cast

Before diving into the cosmic speculation, it is essential to establish the concrete facts that have been confirmed by the studios and the creative team.

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Confirmed Sequel Production Details:

• Official US Release Date: April 3, 2026.
• Official Japan Release Date: April 24, 2026.
• Creative Team: The core team from the first film is returning. Aaron Horvath and Michael Jelenic are set to direct, with Matthew Fogel returning as the screenwriter. Illumination CEO Chris Meledandri and Nintendo's Shigeru Miyamoto will once again serve as producers.

Returning Main Cast:

The voice actors who brought the core characters to life are all expected to reprise their roles for the sequel, ensuring continuity for the franchise's foundation:

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• Mario: Chris Pratt
• Princess Peach: Anya Taylor-Joy
• Luigi: Charlie Day
• Bowser: Jack Black
• Toad: Keegan-Michael Key
• Donkey Kong: Seth Rogen

The return of this star-studded ensemble, particularly Jack Black's iconic performance as Bowser, ensures the sequel will maintain the high-energy and comedic tone that fans embraced in the first movie. The collaboration between Illumination's animation expertise and Nintendo's creative guidance remains the driving force behind this burgeoning cinematic universe.

Cosmic Plot Leaks: Why It’s Called The Super Mario Galaxy Movie

The most significant piece of information—and the strongest indicator of the sequel's direction—is the widely circulated rumor that the film's official title will be The Super Mario Galaxy Movie. This title immediately shifts the scale of the adventure from the familiar Mushroom Kingdom to the vastness of space, directly referencing the critically acclaimed 2007 Wii game, Super Mario Galaxy.

The Galaxy Connection and Luma Lore:

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The original Super Mario Galaxy introduced a deep, emotional story centered on the cosmos, the Comet Observatory, and the mysterious character Rosalina. If the movie follows this path, the plot will likely involve Mario and Luigi traveling through space to collect Power Stars and save the universe from a new, perhaps even more formidable, cosmic threat. This setting allows for:

• New Power-Ups: Expect to see the introduction of Galaxy-specific power-ups like the Bee Mushroom, Boo Mushroom, and the iconic Spring Mushroom.
• The Lumas: The adorable, star-like creatures known as Lumas, who are central to the Galaxy games, will almost certainly be featured, offering new mechanics and a fresh cast of supporting characters.
• Rosalina's Story: The film has a chance to explore Rosalina’s poignant backstory, which involves her traveling the galaxy to find a new home for her Lumas, adding significant emotional depth to the narrative.

The transition to a space-based narrative is a natural progression, allowing the franchise to avoid simply repeating the "save Peach from Bowser" formula and instead focus on world-building and expanding the lore of the entire Nintendo universe.

New Characters and Voice Actors: Rosalina, Bowser Jr., and the Debut of Yoshi

While the returning cast is solid, the true excitement lies in the new characters who are rumored to be joining the adventure, many of whom are fan-favorites whose absence in the first film was highly noted. The sequel is poised to introduce several major players from the expansive Mario franchise.

Yoshi’s Long-Awaited Arrival

The first movie’s post-credits scene was a clear setup for the sequel, showing a green Yoshi egg hatching in the sewers of Brooklyn, which connects Mario’s home world to the Mushroom Kingdom. This moment confirms that Mario's loyal dinosaur companion, Yoshi, will play a significant role in The Super Mario Bros. Movie 2. His introduction is expected to be a major emotional beat, possibly featuring his origin story or a rescue mission for the entire Yoshi clan, who reside on Yoshi's Island.

The Cosmic Duo: Rosalina and Bowser Jr.

The most compelling rumors revolve around the casting of two characters central to the *Galaxy* narrative and the future of the Bowser family dynamic:

• Rosalina (Rumored Voice: Brie Larson): The speculation that Oscar-winner Brie Larson will voice Rosalina has generated massive buzz. Rosalina, the adoptive mother of the Lumas and protector of the cosmos, would be the perfect guide for Mario and Luigi on their intergalactic journey. Her inclusion is a near-certainty given the rumored title.
• Bowser Jr. (Rumored Voice: Benny Safdie): The introduction of Bowser’s son, Bowser Jr., is another strong rumor, with director Benny Safdie (known for Uncut Gems) reportedly taking on the role. Bowser Jr.’s presence could add a new layer to Bowser's character, perhaps showing a softer, paternal side, or introducing a mischievous new antagonist for the heroes.

The WarioWare Factor: Wario and Waluigi

Though not tied directly to the Galaxy plot, the introduction of the anti-heroes Wario and Waluigi is a popular fan theory and a logical next step for expanding the universe. These characters, who serve as rivals and foils to the Mario Bros., offer immense comedic potential. While no official cast announcements have been made, many fans speculate that the sequel could use a secondary plotline involving these greedy, mischievous plumbers, potentially setting them up for a future spin-off film or a major role in a later sequel.

The Future of the Nintendo Cinematic Universe

The enormous financial success of the first film, which grossed over $1 billion worldwide, has cemented Nintendo’s plan to build an interconnected cinematic universe. The Super Mario Bros. Movie 2 is not just a sequel; it is the foundation for future spin-offs and franchise expansions.

Spin-Off Potential

The introduction of characters like Rosalina, Yoshi, and especially Donkey Kong (who already had a significant role) opens the door for dedicated spin-off films. A Donkey Kong Country film is a highly likely candidate, and a film focusing on Rosalina and the Lumas could explore the vast, cosmic lore hinted at in the *Galaxy* games. The inclusion of Wario and Waluigi could even pave the way for a WarioWare-style dark comedy or heist film.

Topical Authority and Key Entities to Watch

To fully appreciate the sequel's scope, fans should familiarize themselves with the key concepts from the source material:

• Comet Observatory: Rosalina's base of operations and the main hub of the Super Mario Galaxy game.
• Lumas: The star-like creatures who are essentially the lifeblood of the cosmic setting.
• Starship Mario: A possible vehicle for the heroes to travel between galaxies.
• Power Stars: The primary collectible and MacGuffin of the Galaxy storyline.
• Shigeru Miyamoto: The legendary creator who is overseeing the entire creative process to ensure the film remains true to the spirit of the Nintendo games.

With an official release date set for April 3, 2026, and a cosmic title that promises to deliver on the biggest scale yet, The Super Mario Bros. Movie 2 is gearing up to be a true cinematic event. The blending of the familiar Mushroom Kingdom with the dazzling, expansive world of Super Mario Galaxy is exactly the kind of ambitious sequel fans have been hoping for.