Sirius Black is often a key character. His rebellious nature and his own complex relationship with the Black family make him an important figure in fanfictions involving Tonks and the family. He can act as a mentor or a fellow outcast for Tonks.
Obviously, Tonks herself is a main character. She brings her unique Metamorphmagus abilities and her own personality into the Black family dynamic.
Bellatrix Lestrange could also be a major character. Her extreme views on blood purity and her loyalty to Voldemort contrast sharply with Tonks. Their interactions, whether it's direct confrontation or more subtle power plays within the family, can add a lot of drama to the fanfiction.
Tonks herself is obviously a main character. She has her unique abilities and a strong personality. Sirius Black could also be a major part, as he has a complex relationship with his family. Andromeda Tonks, who is related to both Tonks and the Black family, could be another important character, bringing in the connection between the two.
Weiss Schnee is another character. Given her complex family situation with her overbearing father and the whole Schnee family legacy, fanfictions can delve into how she reconciles her family ties with her own goals and values in the world of RWBY. She might try to break free from her family's negative influence or find a way to redeem her family name.
The Cullen family members are often main characters. Edward, with his brooding nature and ability to read minds, is likely to be involved. Bella might also be there as she is closely tied to the family. And Carlisle, being the patriarch, often plays a crucial role.
Future Mai could also be a key character in Goku Black forced fanfiction. Given her relationship with Trunks and her own skills, she could be part of the group that is fighting against Goku Black, or she might even have some unique interactions with him that drive the plot forward.
Obviously Naruto himself is often involved. He's the main character of the original series, so in fanfiction about Naruto and black holes, he would be at the center of the story. Sasuke might also be involved as his rival and sometimes ally.
Obviously, Harry Potter himself is a main character. He is usually the one who discovers or is in search of the family grimoire. Hermione Granger is also often involved as she helps Harry decipher the complex spells and ancient writings in the grimoire. Ron Weasley may be there too, providing support and his unique brand of humor.
Obviously, Harry Potter himself is often at the center of it. His friends like Ron and Hermione might also be involved as they support him through the family drama.
Luna Lovegood could be one of the main characters. Her unique perspective on family and friendship could add an interesting dimension to the fanfiction. Neville Longbottom might also be involved. He has his own family story, and his growth and relationship with others could be explored in the context of family bonds. Additionally, Sirius Black could be a major character as he was like a father figure to Harry in some ways.
In some fanfictions, there could be other supernatural beings involved. For example, vampires who might pose a threat to the baby due to the long - standing feud between werewolves and vampires. Or there could be other werewolves from different packs who have their own opinions on Jacob's situation, which could lead to various sub - plots and conflicts within the story.
Obviously, Harry Potter himself is a main character. He is often at the center of the story, trying to understand the significance of the Black Phoenix. Hermione Granger is also commonly included. Her intelligence helps Harry figure out the mysteries surrounding the Black Phoenix, like researching ancient texts about it.