Latest Super Mario Galaxy Leak Comes From Pillsbury Cookies, Offers Our Best Look Yet at Yoshi, And All But Confirms Two More Fan-Favorite Characters

A special box of Super Mario Galaxy Movie cookie dough has provided our best look yet at Mario’s dinosaur steed Yoshi, and strongly hinted at two other fan-favorite characters expected to turn up in the sequel.

The latest leak, which comes from box artwork now visible via retailers online, features Yoshi prominently — as the cookie kit is designed to let you create Yoshi egg cookies. Yum! As fans will remember, the first Mario movie’s post-credits scene teased Yoshi’s egg starting to crack open — though we never saw the dinosaur fully hatch.

Other clues exist on the Pillsbury’s cookie box which point to a couple of other Mario characters, meanwhile — both of which are also yet to make their big screen introduction.

The front and back of the cookie box feature the Comet Observatory, the central hub within the original Mario Galaxy game that’s also where Rosalina lives. It’s hard to imagine a Mario Galaxy movie without its all-important space princess, but this is our strongest confirmation yet that Nintendo will introduce the character on the big screen in the upcoming sequel.

Finally, the rear of the cookie box shows a star map that features graffiti of Bowser Jr., a key antagonist in various Mario games — including both Mario Galaxy 1 and 2. Nintendo’s first Mario movie made no mention of Bowser’s offspring, though that all looks set to change for its follow-up.

The leak follows an earlier spill of information from a similar promotional tie-in with Old Spice — which saw The Super Mario Galaxy Movie’s name first revealed via promotional cans of deoderant. As if further confirmation was needed of that leak’s legitimacy, the Yoshi artwork shown in better detail on the Pillsbury cookie box now matches up with the one seen in that leak exactly.

Fans have long been hoping for Nintendo to feature more of both Rosalina and Bowser Jr. — and in both cases, for more to be revealed about their origins. Indeed, after a notable tease in the first Mario movie, Nintendo looks set to reveal more about Rosalina’s link with Peach following years of fan debate over how they might be related.

Bowser Jr., meanwhile, also has questions surrounding his parentage. First introduced in Super Mario Sunshine, the mischievous offspring is initially presented as the result of a union between Bowser and Peach, though this is later revealed as a joke. Exactly who Bowser Jr.’s mother is, though, has never been made clear. (Mario creator Shigeru Miyamoto once claimed in an interview he was the mother, though this was a joke too.)

The Super Mario Galaxy Movie is currently slated for release in theaters on April 3, 2026. Hopefully then, all will be revealed.

Tom Phillips is IGN’s News Editor. You can reach Tom at tom_phillips@ign.com or find him on Bluesky @tomphillipseg.bsky.social