One common theme is adventure. The oc and Vivian often go on quests together in the Paper Mario world. Another theme could be friendship that gradually develops into something more. And sometimes, there's the theme of self - discovery for both characters as they interact.
There might be some out there. You could start by checking fanfiction websites like FanFiction.net or Archive of Our Own. Sometimes it takes a bit of searching through different categories and tags related to 'Paper Mario' and the specific characters 'oc' and 'Vivian' to find the really good ones.
Adventure is a very common theme. Mario is always known for his adventures, and when paired with Vivian, they embark on various quests, like finding a lost power - up or rescuing a captured character.
Love is a very common theme. The OC and Vivian often fall in love, whether it's a slow - burn romance or love at first sight. Another theme is friendship. Before becoming romantically involved, they usually start as friends and build a strong bond.
Power - ups and their new uses are also a common theme. Writers might come up with unique power - ups or different ways of using the existing ones in the game. And of course, the theme of good vs evil is always there, but with new villains or different forms of the old ones. For example, a fanfic might introduce a more powerful form of Bowser that the characters have to face in a new and exciting way.
A lot of 'Cappy x Mario' fanfictions have the theme of heroism. Mario is already known as a hero, and with Cappy by his side, they become an even greater force for good. They save kingdoms and people in distress. There is also the theme of loyalty. Cappy is always loyal to Mario and vice versa, and this loyalty is often tested in different stories.
Romance is also a big theme. Their relationship is explored in different ways, from the shy beginnings of their feelings to full - blown declarations of love. Some fanfictions might show how they have a secret relationship that they keep from the other characters in the Mushroom World.
Well, there are often themes of power dynamics. Bowsette, as a powerful character in her own right, might interact with Mario in ways that play with who has more control in the relationship. Also, themes of redemption can be found, like Bowsette trying to change her ways for Mario. And then there are the more light - hearted themes of just them having wacky adventures together and slowly falling in love despite their differences.
In Mario x Peach fanfiction, the theme of growth is quite common. Both characters grow as individuals and in their relationship. Mario might become more confident in expressing his feelings, and Peach could become more independent. Another theme is discovery. They discover new things about each other, like hidden talents or pasts. This helps to build a more complex and interesting relationship in the fanfiction.
A common theme is friendship. They come from different worlds (Mario's world of Mushroom Kingdom and Harriet's own world), but through their interactions, they form a bond of friendship. For example, in some fanfics, they help each other out when one is in trouble.
One common theme is adventure. Mario is known for his adventures, and in these fanfictions, the reader often joins him on exciting quests through the Mushroom Kingdom. Another theme is friendship. The relationship between Mario and the reader develops as they face challenges together.