There could be various reasons why it's considered 'creepy'. It might deviate from the standard MLP lore regarding Pinkie Pie. For example, it could have Pinkie in a desolate or nightmarish setting that is not at all like the bright and colorful Equestria we know. Or perhaps it gives Pinkie some powers or behaviors that are not in line with her character, like some form of mind control or a really odd obsession. Without reading it, this is all speculation, but these are the types of things that could potentially make a fanfic about Pinkie 'creepy'.
Finding 'the really creepy mlp pinkie fanfic' is not something I would encourage. However, some small, unmonitored fanfic communities or older, less - moderated fanfic archives might theoretically have it. But these are not reliable or safe places to explore. It's much better to enjoy the official My Little Pony content or positive fan - made works that uphold the values of the franchise.
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.
A 'mlp pinkie pie sad fanfic' might explore the emotional depth of Pinkie Pie in a rather somber way. It could involve situations where Pinkie Pie faces disappointment, loss of friends, or failure in her party - planning endeavors. This type of fanfic gives a different perspective on her usually cheerful character.
One possible theme could be loneliness. Even though Pinkie Pie is usually surrounded by friends, the fanfic could show a situation where she feels alone, like when her friends are too busy for her.
A frequent theme in 'mlp sad pinkie pie fanfic' is the change in her relationships. If a friendship in Ponyville sours, Pinkie Pie would be deeply affected. It could be due to a misunderstanding or someone else coming between her and a friend. These changes in relationships can bring out a lot of sadness in her character as she values her friends so much.
There's also a fanfic where Pinkie Pie goes on a journey to find a special ingredient for a super - delicious cake. In this fanfic, we see her determination and her ability to make friends along the way. It shows how Pinkie Pie's positive attitude can get her through any situation. The interactions between Pinkie and the new characters she meets are really engaging.
One 'mlp sad pinkie pie fanfic' could be 'The Lost Laughter of Pinkie Pie'. It delves into a situation where Pinkie Pie loses her ability to laugh and how she copes with the sadness.
Well, a really interesting 'mlp pinkie pie sisters fanfic' is 'Sisters in Harmony'. It delves deep into the relationship between Pinkie Pie and her sisters. It has a lot of heartwarming moments as they go through different challenges together. There's also 'The Pinkie Pie Sisterhood', which showcases their unique personalities and how they interact within the Pony world.
The contrast between their personalities. Pinkie Pie is so energetic and spontaneous while Twilight is more reserved and studious. When they interact in fanfics, it creates a lot of fun and engaging situations.
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.