One of the common themes could be Revan's redemption arc. Given Revan's past actions, fanfictions may focus on how he/she tries to make amends or find a new path. Also, the exploration of Revan's origin story, like where he/she came from and how he/she became such a powerful force - user, can be a theme. Additionally, Revan's role in different events in the Star Wars timeline might be explored in a way that doesn't involve inappropriate content.
If we exclude the adult - related themes that 'lemon' might imply, common themes in mermaid fanfiction could be the mermaid's longing for the human world. Mermaids might be curious about human culture, technology, or relationships. Another theme could be the mermaid's struggle to fit in, either in the human world or in their own mermaid society if they have some unique trait or ability that sets them apart.
Excluding adult content, themes in undertaker fanfiction can be his role in the overall narrative arc. How does he contribute to the story's progression? His unique appearance and how it affects his interactions with others can also be a theme. For example, his long hair and pale complexion might be a point of interest in stories, leading to themes about how others perceive him based on his looks.
The theme of transformation could be present. Not just her physical transformation into a Gorgon, but also a transformation in her personality as she is in a submissive state. She might learn new values, new ways of thinking, and new ways of interacting with others. It could also explore the theme of power dynamics, not in a sexual way, but in terms of who has the upper hand in different situations and how Medusa copes with it.
One common theme could be the exploration of their relationship in a more romantic or platonic way. Maybe they start as enemies but gradually develop an understanding of each other. Another theme could be their interaction within the Hogwarts social structure, like how they deal with the Slytherin - Gryffindor divide. And also, their personal growth in relation to each other, for example, how Pansy's view of Harry changes as she sees his heroic side.
One common theme could be self - discovery. In femharry stories, Harry (as a female) might go through a journey of understanding her new identity in the magical world. Another theme could be friendship, exploring how she forms and maintains relationships with other characters like Hermione and Ron.
Another theme could be sacrifice. In the context of the original story, they are in a dangerous world. Fanfictions could explore how they are willing to sacrifice for each other. This selfless love, whether it's a romantic or a very deep platonic love, can be a central theme in the fanfiction, without having to involve adult - related themes.
One common theme is the loyalty of dogs. Many dog fanfictions focus on how a dog is unwaveringly loyal to its owner, through thick and thin. For instance, in some stories, the dog will protect the owner from danger even at the cost of its own life. Another theme is the friendship between dogs and other animals or humans. They might show how a dog befriends a lonely child or forms an unlikely bond with a cat.
Well, even if we exclude adult content, some common themes might be the exploration of Tom Riddle's dark nature. For example, how his early experiences led to his becoming Voldemort. Writers might also focus on his relationships with other characters, like his interactions with Hogwarts professors or fellow students, in a more innocent yet complex way.
One common theme is her role as a strict but fair teacher. Many fanfictions explore how she imparts knowledge and discipline to the students. Another theme is her relationship with Dumbledore. Some fanfictions might delve into their friendship and how they worked together to protect Hogwarts.
One common theme is self - discovery. When an OC is reborn, they often have to figure out who they are in this new life. Another theme could be redemption. Maybe in their previous life, they made mistakes, and now they get a chance to make things right. For example, if they were a bully before, they could become a protector in their new life.