Rosalina
Nintendo released a surprise update for the Switch version of Super Mario Galaxy 2, introducing a new epilogue chapter to Rosalina's storybook. The addition expands the game's lore more than a decade after its original release. Players can access it after clearing any galaxy and earning a power star.
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Shigeru Miyamoto, creator of Mario, has expressed hope that the backstory for Princess Peach introduced in The Super Mario Galaxy Movie will influence future Nintendo games. The film reveals that Peach and Rosalina are sisters separated at a young age. This connection echoes long-standing fan speculation from the original Super Mario Galaxy game.