Well, of course, Black Lightning himself is the central figure. His daughters, Anissa and Jennifer, are also frequently featured as they play important roles in the original series and have their own storylines and powers. Then there are the villains from the show like Tobias Whale. He's a very interesting character to include in fanfiction as he can create a lot of conflict.
Some fanfictions might also feature characters from the wider DC universe. Although Black Lightning has its own distinct world, crossovers can happen in fanfiction. So, characters like Superman or Batman could potentially show up, either as allies or in a more adversarial role, which can make for some really exciting and unique stories.
Sasuke could also be a main character. Given his own powerful eyes and his connection to Naruto, he could be involved in a story about the black rinnegan. Maybe he has to team up with Naruto again to deal with a powerful enemy with the black rinnegan.
The Guardians like Jack Frost are also commonly featured. Their interactions with Pitch Black are crucial in these fanfictions. They might be trying to stop him or, in some cases, trying to understand him better.
Obviously, Balerion himself is a main character. His rider, if mentioned in the particular fanfiction, would also be a key character. Often, other dragons might also be important, like Vhagar or Meraxes if the story is set in a world where all the great dragons co - exist.
Well, obviously Black Goku himself is a main character. He is the center of the story in most cases as his actions drive the plot. Goku also features prominently as he is the one who has to oppose Black Goku. Vegeta is often there too, as he is another strong Saiyan and is eager to take on the threat that Black Goku poses.
There might be an original character created specifically for this fanfiction. This character could be from a long - lost clan that has a deep connection with black lightning. They could enter the Naruto world and cause a stir, either as an ally or an adversary, and their journey with black lightning would be a central part of the story.
Then there are the other members of the Black family, either alive or in portraits. They could be sources of information, guidance, or obstacles for the heir. For example, Walburga Black's portrait might be constantly berating the heir or trying to steer them in a more traditional, dark - leaning direction of the family's history.
Hermione Granger could also be a central figure. Given her thirst for knowledge, she might be the one to first discover the existence of black belt magic in the fanfiction. She would then study it intensively, trying to understand its mechanics and how it can be used for good in the wizarding world.
The heir of the Black family is the key character, of course. But other characters like Hermione Granger could also be involved. She could help the heir with her vast knowledge of magic. And Dumbledore might also show up, as he has a deep understanding of the wizarding world and could offer advice or warnings to the heir.
Coco herself is, of course, a main character in most coco fanfiction. She is the center of the story, whether it's about her music career or her family relationships.
Willy Wonka is of course a main character. He is often depicted as an eccentric and brilliant chocolatier with many secrets. The Oompa - Loompas also feature prominently as his helpers in the factory, with their unique songs and personalities.