Summary

• The Super Mario Bros. Movie 2 may explore a fan theory about Princess Peach's origins, adding depth to her character.
• The success of the first film makes a sequel likely, and confirming this theory could be a great direction for the franchise.
• Introducing Rosalina as Peach's sister in the sequel could provide an interesting connection to the cosmic side of the Mario universe.

The Super Mario Bros. Movie 2 may have a big impact on the lore of one of its main characters, as the biggest new character tease can finally fulfill a Princess Peach theory that is 17 years old. The Super Mario Bros. Movie expanded on Princess Peach in a way that hasn't been seen before, fleshing the character out more than the original games ever did. The Super Mario Bros. Movie 2 needs to continue this trend, and a classic Princess Peach fan theory can be the perfect launch pad for this.

Nintendo and Illumination's first film collaboration was one of the biggest movies of 2023, with The Super Mario Bros. Movie's box office success showing just how big of a hit the film was. While The Super Mario Bros. Movie 2 hasn't been confirmed yet, it is expected to happen due to the first film's critical and commercial performance. There are tons of directions that a sequel could take the Mario movie franchise, but confirming this fan theory might be the best one.

Super Mario Bros Movie 2 Introducing Rosalina Could Finally Make The Theory Of Her Being Peach's Sister A Reality

The Super Mario Bros. Movie 2 may be introducing Rosalina to the film franchise, meaning that the sequel could finally make the theory of her being Princess Peach's sister a reality. Ever since the release of Super Mario Galaxy, it has been speculated that Peach is actually Rosalina's mother, with the game revealing that Rosalina has a long-lost mom that greatly resembles the iconic princess. The mother storyline wouldn't be possible due to the story of The Super Mario Bros. Movie, but making the princesses sisters would be the perfect solution.

It is speculated that Rosalina will debut in the sequel, meaning that The Super Mario Bros. Movie 2 could use this Rosalina storyline to finally explain where Princess Peach actually came from. Giving Peach a connection to the cosmic side of the Mario universe would be an interesting way to flesh out the world of the franchise, setting up future storylines from other games.

Super Mario Bros Movie 2 Needs To Finally Answer Princess Peach's Real Origins (With Or Without Rosalina)

Even if Rosalina doesn't appear in The Super Mario Bros. Movie 2, the film needs to finally answer Princess Peach's real origins. The Mario game franchise has never really explored the origins of each of its characters, leaving that to supplementary Mario materials. The games have provided a variety of origins for Princess Peach, with explanations ranging from her being a citizen of Brooklyn to her being brought by a stork as a baby to her being a humanoid version of a Toad.

The Super Mario Bros. Movie does reveal that Princess Peach appeared in the Mushroom Kingdom as a baby, but it doesn't flesh her backstory out much more than that. The Super Mario Bros. Movie 2 has to fix this, finally giving Peach a definitive, unquestionable origin story.