TLDR: New details have emerged for The Super Mario Galaxy Movie, confirming that Fox McCloud from the Star Fox franchise will appear.

Fox McCloud’s Arrival at the Super Mario Movie Franchise
Fans had previously speculated about Fox McCloud’s involvement after spotting what appeared to be the character in a brief moment within an earlier trailer.
The latest update confirms his appearance, while the voice actor for the role has not yet been announced. The film is scheduled to be released in cinemas on Apr 1 2026.
Building Toward a Larger Nintendo Universe
The inclusion of Fox McCloud has fuelled speculation that Nintendo and Illumination may be building toward a larger crossover project inspired by Super Smash Bros.
Fox is one of the original 12 fighters from the 1999 game and has appeared in every major installment since.
Previous trailers for the film have also hinted at the presence of Pikmin, which are associated with Captain Olimar, another character featured in the Super Smash Bros. series.
With multiple iconic characters now appearing, the film appears to be laying the groundwork for a broader interconnected universe.
What We Can Expect
The growing number of Nintendo characters appearing in The Super Mario Galaxy Movie has sparked speculation about future additions.
Characters such as Samus and Captain Falcon are among those fans believe could appear in upcoming installments, further expanding the cinematic universe.