Definitely the babysitter. Writers can explore her backstory, her struggles with being a vampire and trying to fit into the human world while babysitting. The main kid she babysits is also a popular choice. He's the one who has the most interactions with the babysitter and often gets into crazy situations because of her vampire nature. Also, any of the villainous vampires from the show can be fun to write about, as they can add a lot of drama to the fanfiction.
Obviously, Erica's sister is a main character. And we can expect characters from the original 'My Babysitter's a Vampire' series to be involved as well, like the babysitter who is often in the middle of the vampire - related chaos. There may also be other vampires and humans who interact with Erica's sister throughout the story.
Another issue is staying true to the original characters. Fans of both shows have a clear idea of how the characters should act. For example, Naruto is known for his determination and positive attitude, and any deviation from that in the fanfiction might not be well - received. Similarly, the vampires in 'My Babysitter's a Vampire' have their own distinct personalities that need to be maintained.
The character of Benny is really appealing. He's a vampire with a sense of humor, and fanfictions allow writers to explore his character further. For example, they can create new adventures for him.
Obviously, the vampire babysitter herself is a great character to focus on. You can explore her internal struggles, like how she balances her vampire instincts with her job of taking care of the kids.
It could be another vampire that she met in secret. Maybe he was passing through town and they had a brief encounter, and now she's left to deal with the pregnancy on her own.
Based on the title, it seems that Benny and the babysitter are the main characters. Since it's a vampire fanfic, there might also be some vampire characters who play important roles, but they are not directly mentioned in the title.
Another fanfiction concept could involve a character from 'My Babysitter's a Vampire' getting involved in the ninja world of 'Naruto'. Maybe Benny could travel to the Hidden Leaf Village. He would be really intrigued by the different jutsus and might try to learn some of them, while also introducing the idea of vampires to the ninjas. This could lead to some really interesting interactions and training sessions between the two groups of characters.
One way to find great Ethan vampire fanfiction is to join relevant fan groups on social media. Fans often share their favorite stories. Some fanfictions might delve into Ethan's relationships with other characters in the 'My Babysitter's a Vampire' universe from a vampire - centric perspective. They could explore his powers in more detail or create new storylines around his vampiric nature.
First, think about the main characters. Decide on the personality of the vampire babysitter, whether they are more of a brooding, serious type or a fun - loving one. Then, come up with a basic plot idea, like a mystery that the babysitter has to solve while taking care of the kids.
The Vampire King himself is obviously a very popular character. He is often depicted as powerful, mysterious, and alluring.