Friendship is a very common theme. Since they are both characters from the MLP universe, fanfics often explore how their friendship develops and grows. They might start as acquaintances and become best friends, or they might have some bumps in their friendship that they need to overcome.
Adventure is also a popular theme. They might go on a quest together, like looking for a lost treasure or saving Ponyville from a mysterious threat. This allows for a lot of action and character development. In these types of fanfics, Rainbow Dash's bravery and Pinkie Pie's spontaneity often play important roles.
Another interesting one is 'When Pinkie Met Dash'. This fanfic delves into their first encounter and how it led to the development of their relationship over time. It has a lot of cute and humorous moments that really capture the essence of their personalities.
There's also 'Rainbow Dash and Pinkie Pie: Unlikely Allies'. In this fanfic, they start off on different paths but end up coming together to solve a big problem in Ponyville. It delves deep into their personalities and how they complement each other. It's quite long and detailed, which is great for those who like to really get into the story. The descriptions of their emotions and the situations they face are very vivid.
A good fanfic of them should have their distinct personalities shine through. Rainbow Dash's confidence and athleticism, and Pinkie Pie's wackiness and friendliness. If it can capture that essence, it's a great start.
In a Rainbow Dash and Pinkie Pie fanfic, it could be centered around their shared experiences. Maybe they enter a competition together. Since Rainbow Dash is competitive and Pinkie Pie loves to be involved in things, this could lead to some really interesting scenarios. The story might also explore how they deal with their differences. For example, Rainbow Dash might get frustrated with Pinkie Pie's chaos at times, but then realize that it's part of what makes her special. And of course, there will likely be lots of colorful descriptions of Equestria and the other ponies they interact with.
Another common theme is adventure. They often go on adventures together, whether it's exploring a new part of Equestria or helping a lost animal. This allows for a lot of character development as they face different challenges during their adventures. For instance, Fluttershy might have to be brave in a spooky place, while Pinkie Pie learns to be more patient.
Character development is key. In these fanfics, we often see Rainbow Dash becoming more in - touch with her softer side thanks to Pinkie Pie, and Pinkie Pie might become more responsible with Rainbow Dash's influence. Also, the fanfic should capture their unique personalities well. Rainbow Dash's competitiveness and Pinkie Pie's wackiness should be on full display.
Friendship is a very common theme. Just like in the original MLP series, the relationship between the human and Pinkie Pie often revolves around building a strong bond. Another theme could be discovery. If a human enters Equestria, they are discovering a whole new world, and Pinkie Pie can be their guide. Or if Pinkie Pie is in the human world, she is discovering new things about humans.
Another common theme is adventure. Fanfics often send them on exciting adventures, whether it's exploring a new part of Equestria or going on a quest to find a magical item. Their different skills and personalities, like Rainbow Dash's speed and Fluttershy's ability with animals, play important roles in these adventures. They might also learn something new about each other during the adventure, strengthening their bond.
One common theme is the struggle between two identities. Rainbow Dash has her normal pony self and then the new werewolf aspect which often causes internal conflict. For example, she might worry about how her friends will react or how she can control her new powers.