Bella is the central character as she is the 'daughter' in the title. The tiger is also a main character. There could be a wise old owl or a friendly deer that act as side characters, guiding Bella or helping her in her journey related to the tiger.
Well, Bella is the key figure. The tiger is a main character too. There may be some human antagonists who don't understand Bella's connection with the tiger and try to separate them. And perhaps there are some native tribes or groups in the story that have a different perspective on Bella and the tiger's relationship.
If it's set in a school or work environment, Bella's friends or colleagues could be main characters. They might notice the changes in Bella as she discovers this new family connection. Also, if there are antagonists in the story, it could be someone who doesn't want Bella and Billy to form a relationship. This could be someone who has a grudge against Billy and sees Bella as a way to get to him, or it could be someone who is jealous of Bella getting a new family.
Well, it could be about Bella having some sort of special relationship with a tiger. Maybe she has the ability to communicate with it on a deeper level, like they share a telepathic bond. And she might go on adventures with the tiger, protecting the forest or something.
I'm not sure as I haven't read that specific fanfiction. But generally in a fanfiction, Bella being the daughter of Trigntins would likely mean she has a special role within the story's universe created by the fanfic writer.
A potential main character could be Bella's best friend. This friend could provide support and a different perspective as Bella navigates her new identity. There might also be a mentor figure for Bella, someone who knows a lot about Elijah's world and can guide her. This could be an old friend of Elijah's or a wise elder in their community.
The daughter's friends in the fanfiction can be popular too. They could be other hybrids or supernatural beings that she meets during her adventures. For example, there might be a vampire friend who teaches her about the vampire culture or a human friend who helps her understand the human side of her heritage. And of course, any antagonists, like a rogue vampire who wants to harm the daughter for some reason, can also be a popular character as they drive the conflict in the story.
There could be Klaus. Since he is Rebekah's brother, he would likely be part of Bella's life in some way. He might be a protective uncle or a source of conflict if he has different ideas about how Bella should be raised. Another character could be Elijah. He might act as a mentor to Bella, teaching her about their family's history and values.
Caroline could be in the story. She might be Bella's friend or a rival. If she's a friend, she could help Bella navigate the supernatural world. If a rival, it could be because of her relationship with Damon or Stefan in some way. Also, Klaus could be a character. He might see Bella as a means to get to Damon, or he could be interested in her unique abilities if she has any.
The other gods who don't trust Hades might be antagonists. They could see Bella as a threat because of her relation to Hades. For example, Zeus might be worried that Bella could one day try to overthrow him or cause trouble in the order of the gods.
There could be a female character, Sofia, who is another member of the mafia. She sees Bella as a threat at first, thinking she'll steal her position or the attention of the men in the mafia. But as time goes on, they might form an unlikely alliance. There may also be a young and ambitious mafia underling named Antonio, who is always looking for ways to climb the ranks and his actions often impact Bella's situation in the story.
The main character is always Bella in this type of fanfiction. However, new characters could be introduced as well. For instance, a blind mentor who has learned to live fully with blindness could be added. This character could guide Bella and help her accept her condition. Or there could be a villain who tries to take advantage of Bella's blindness, which would then lead to a conflict where Bella has to use her wits and other strengths to overcome the villain.