Riley Freeman can be a central character in some 'the boondocks fanfic'. Writers may focus on his growth from a young, somewhat naive boy into a more aware individual. They could also play with his fascination with the 'gangsta' lifestyle and how it evolves in different scenarios.
Granddad is also commonly focused on. Fanfic might delve into his past, like his experiences growing up and how that has shaped the way he raises Huey and Riley. It could also explore his relationships with other characters in the neighborhood in more detail.
Huey Freeman is often a main focus. Since he's such a complex character in the original 'Boondocks', fanfic writers like to explore his thoughts and actions further. They might put him in situations that test his principles and beliefs even more.
Sasuke can also be a main focus. In a Tenketsu Naruto fanfic, Sasuke might have his own journey related to tenketsu. Maybe he discovers something about Naruto's tenketsu that makes him jealous or drives him to further his own power in a different way. Their rivalry could be intertwined with the concept of tenketsu.
Naruto is often a central character in naruto exams fanfic. His journey through the exams, with his determination and growth, is a common focus. His unique skills like the shadow clone jutsu play a big role in the exam scenarios.
Baby is obviously one of the main characters focused on. Fanfic writers often explore his thoughts, feelings, and his growth as a character. Debora is another main focus. Writers might write about her relationship with Baby and how she copes with the dangerous world he is involved in.
Sasuke is often a central character. Given his own struggle with hatred in the original Naruto series, fanfics might further explore his journey in the context of the curse of hatred, perhaps showing how he tries to overcome it in different ways.
The main character is Naruto without a doubt. But characters like Sasuke can also be important in these fanfics. Sasuke, as Naruto's rival, may be shown to have a different perspective on Naruto's past. Maybe he discovers something about Naruto's family or his own family's connection to Naruto's past that was previously unknown. And the Sannin, including Tsunade, could also be significant as they were part of the older generation with knowledge of events that could be related to Naruto's past.
The children of the original main characters are often focused on. For example, James, Albus, and Lily Potter. Their experiences at Hogwarts and how they live up to their parents' legacies are common themes.
The main characters in 'batman killing joke fanfic' are predominantly Batman and the Joker. But sometimes, other characters from the Batman universe like Commissioner Gordon also get some attention. Since in the original 'Killing Joke', Gordon was a key part of the story, in fanfics, his character can be further developed, for example, his reaction to Batman's actions towards the Joker.
There could also be fan - created characters that are hybrids or have special abilities related to the Alien and Predator lore. These characters might bridge the gap between the two species, either trying to bring peace or causing more chaos in the already dangerous world of 'alien v predator requiem'.
Hermione is also a popular character in these fanfics. Many alternate endings might show her in different relationships, not just with Ron. Maybe she could have a more independent life, traveling the world to study different forms of magic and using her intelligence to solve global wizarding problems.
Naruto himself is often a central focus. His growth as a ninja and his journey to become Hokage are popular themes to expand on in fanfic. Writers can explore different paths his life could have taken.