The rumors suggest Princess Daisy might appear in the Super Mario Galaxy movie, though it is not yet confirmed. Some fans believe her inclusion is likely because the Super Mario Bros. Movie sequel's story is inspired by the Galaxy games, which could allow for surprises from all Mario eras. Another rumor suggests her inclusion could be set up by introducing the antagonist Tatanga, a character from her debut game, Super Mario Land. Princess Daisy has been rumored to appear in the Super Mario Galaxy movie, the official title for the upcoming sequel to The Super Mario Bros. Movie. While the plot is expected to focus on Rosalina and a cosmic adventure, Daisy's potential inclusion has been a persistent topic of discussion among fans.
Sources of the rumors
Initial plans: Concept art for the first Super Mario Bros. Movie was released showing Daisy, though she was ultimately not included. This indicates that the filmmakers at Illumination and Nintendo have considered her for the new film franchise.
The Galaxy connection: Some fan theories speculate that the filmmakers could connect Daisy's home kingdom of Sarasaland to the Sand Kingdom from Super Mario Odyssey, potentially allowing her to be introduced during the movie.
Fan discussions: A large portion of the rumors comes from fan discussions online, where many express hope for Daisy's inclusion, especially after Nintendo has featured her more prominently in recent video games like Super Mario Bros. Wonder.
Plot integration: Some fans propose story ideas for how Daisy could fit into a Galaxy-themed plot. Suggestions include having Luigi take a "desert detour" that brings him to Sarasaland or introducing Tatanga, the villain from Daisy's debut game Super Mario Land, as a new antagonist.
Confirmed vs. rumored
Confirmed characters: So far, the officially confirmed characters for the Galaxy movie are the returning cast (Mario, Peach, Luigi, Bowser, Toad, and Kamek) along with new additions Yoshi and Bowser Jr..
Likely rumors: Other heavily rumored characters include Wario and Rosalina. The end-credit scene in the first movie, which teased the arrival of Yoshi, also showed a Luma, indicating that Rosalina will likely have a role in the space-based plot.
Daisy's status: With a plot that focuses on space, adding Daisy—whose story is more connected to a desert kingdom—is a bit more of a stretch and not as likely as Rosalina. However, the rumors persist due to fan demand and her established place within the larger Mario universe.