One great 'Dipper Pines x Reader Fanfiction' is 'A Summer with Dipper'. It really captures the essence of the Gravity Falls setting and Dipper's character while creating a sweet relationship with the reader. Another one is 'Dipper's Secret Admirer' which has an interesting plot where the reader is secretly in love with Dipper and all the little adventures and misunderstandings that follow. 'Mystery with Dipper' is also good as it combines the mystery-solving aspect of Gravity Falls with a budding romance between Dipper and the reader.
First, understand the characters well. Dipper is a curious and intelligent boy, so make sure his personality traits are reflected in the story. For the reader insert, create a relatable character. Next, use the Gravity Falls setting effectively. Incorporate the strange and magical elements of the town into the relationship between Dipper and the reader. Also, have a clear plot. It could be about solving a mystery together or just getting to know each other better.
You can start by looking on Archive of Our Own (AO3). It has a large collection of fanfictions, and you can easily search for Stanley x Narrator ones. There are different tags you can use to narrow down your search.
A popular Stanley x Narrator fanfiction is 'The Understanding'. In this one, the writer focuses on the emotional connection between the two. It's beautifully written, with detailed descriptions of their interactions and how they come to understand each other on a deeper level.
One popular theme is the battle of wits. Since Dipper is smart and Bill is cunning, their mental duels make for exciting reading. Another theme could be redemption. Some fanfics might explore the idea of Bill changing his ways, perhaps influenced by Dipper.
The unique dynamic between Dipper and Mabel Gleeful. Their different personalities, Dipper's more serious and inquisitive nature contrasted with Mabel's fun - loving and spontaneous side, create a lot of interesting interactions in the fanfic.
One popular 'dipper pines x mabel gleeful' fanfic is 'The Twin Adventures'. It has an interesting plot that takes the characters on a new journey filled with mystery and a bit of magic. Another one could be 'The Gleeful Bond' which focuses more on the emotional connection between Dipper and Mabel Gleeful in a unique way.
Power struggle is also a common theme. Dipper Gleeful may be more power - hungry in some interpretations, and when he meets Dipper Pines, there can be a struggle for dominance or control. This can lead to some intense and exciting plotlines as they try to outwit each other or find a way to coexist without one overpowering the other.
Yes, there are some. You can start by looking on popular fanfiction websites like Archive of Our Own. Just search for 'Mabel Pines x Bill Cipher' and you'll find a variety of stories with different themes and plotlines.
Often, there are themes of friendship and its power. Despite their differences, the fanfictions may explore how Mabel's friendship could influence Bill. Also, the theme of the unexpected can be common, as their pairing is quite an odd one, so the stories play on how unexpected their interactions and relationships can be.