What are some interesting plot ideas for Super Mario Power Stars fan fiction?

Bowser is an obvious choice. He's always after the power stars in the main Mario games, so it would be natural for him to be the main antagonist in the fan fiction too. He could be more devious than ever, using the power stars to enhance his strength and create new, more difficult challenges for Mario.

One idea could be that Mario gets trapped in an alternate dimension where he has to find a way back to the Mushroom Kingdom and to Princess Peach. Meanwhile, Peach has to hold off Bowser's attacks on her own without her usual hero.

One idea could be that Naruto somehow gets transported into the Super Mario world. He could use his ninja skills to help Mario defeat Bowser in a unique way. For example, Naruto's shadow clone jutsu could be used to create multiple distractions while Mario sneaks up on Bowser.

Well, in Super Mario OC fanfiction, sometimes there are really cool crossovers. Like an OC from the Super Mario world meeting characters from other Nintendo franchises. This can lead to unique adventures and interactions. Also, some fanfictions focus on the backstories of the OCs, how they came to be in the Mario universe, which can be very engaging.

One idea could be that Bowser gets tired of always being the bad guy and tries to make amends with Mario. They could end up teaming up against a new, greater evil in the Mushroom Kingdom.

One idea could be a story where the super corp faces an unexpected technological crisis that only the combined efforts of their most unlikely employees can solve. Maybe a janitor discovers a crucial flaw in the system while cleaning.

One idea could be a crossover with the Mario Kart universe. Mario and his friends from Super Paper Mario could find themselves on the race tracks, facing off against the regular Mario Kart characters. Another could be a crossover with the Legend of Zelda. Maybe Mario has to traverse Hyrule, using his paper - like abilities in a new and strange land filled with Zelda - style dungeons and puzzles.

One idea could be a crossover with the Legend of Zelda series. Mario could find himself in Hyrule, having to use his galaxy - hopping skills to navigate the vast and diverse landscapes. Maybe he teams up with Link to defeat a common enemy that threatens both their worlds, like a powerful dark entity that has the ability to distort space - time.

One interesting Mario fan fiction could be about Mario and Luigi exploring a new, mysterious world that is not in the original games. Maybe it has strange creatures and unique power - ups.

The story involves Mario on a new adventure to save the world. He teams up with various characters. They are on a quest to find the seven stars which are important for some reason related to the well - being of their world.