I'm not sure specifically which ones are the most popular, but there could be some that gain a following within the fanfiction community. It might depend on how creative and engaging the story is in terms of how Spongebob gets hurt and how he overcomes it.
The theme of community is also prevalent. The various characters in Bikini Bottom interact in different ways in fanfictions. For example, how they all come together to celebrate a special event or deal with a crisis that affects the whole town. It shows the unity and diversity within the underwater community.
I'm not really into that kind of fanfiction, but generally, it might involve some creative scenarios where the characters' relationships are explored in a new way. Maybe it could be about how the characters around a pregnant character in the Spongebob world react and support.
One popular female SpongeBob fanfiction might be those that focus on the female characters in Bikini Bottom. For example, a story could center around Sandy Cheeks' adventures that are not shown in the original series. Another could be about Pearl's attempts to fit in with different groups in the underwater world. There are also stories that might give new personalities to the female fish characters, creating unique storylines around their daily lives in the ocean.
I'm not sure of specific popular 'pregnant Spongebob fanfiction' stories as this is a rather unusual and not mainstream concept. However, some might explore it in a comical or out - of - the - box way within the fanfiction community.
One interesting story could be where Spongebob and Patrick discover a hidden underwater world full of strange and magical creatures. They have to use their friendship and unique skills to navigate through this new world and get back home.
One popular 'Spongebob OC Fanfiction' story could be about a new character who is a mermaid and befriends Spongebob. They go on adventures in Bikini Bottom together, exploring new areas that the regular characters haven't discovered yet.
Mr. Krabs would probably be thinking about how this could be good for business. He might see it as an opportunity to create a new tourist attraction. Patrick would be really happy for Spongebob at first, but then he might get a bit jealous because he doesn't want to lose his best friend. Squidward would be extremely annoyed by all the commotion and the fact that he has to be part of the wedding in some way.
A great 'Spongebob Squarepants Human Fanfiction' idea could be that Spongebob is a human student in a school by the ocean. His teacher is Mrs. Puff, also a human. He's always getting into hilarious situations in school, like accidentally flooding the classroom during a science experiment. His friends are all part of his class, and they have to deal with school bullies that are like the villains from the original show but in human form.
There might be a fanfiction where Spongebob tries to impress Sandy in a really unique way. He could learn all about her hometown of Texas and create a mini - Texas in Bikini Bottom for her. This shows his love for her in a really creative and endearing way.