Caroline Forbes could be a great character for a multiple mates fanfiction. She has a strong personality and her own set of relationships. In a fanfiction, Tyler and Klaus could both be her mates. Tyler representing her werewolf side and Klaus her vampire side, which would add depth to her character as she tries to figure out her feelings for both of them.
Elena Gilbert is an obvious choice. She has complex relationships with many characters in the show already, so it would be easy to write a fanfiction where she has multiple mates. For instance, Damon and Stefan could both be her mates in a different take on the love triangle.
Perhaps a fanfiction where an ancient spell gone wrong results in multiple characters believing they are mates with one person. This would cause jealousy, confusion, and lots of power struggles as they all vie for the attention of this one individual. For example, Damon, Stefan, and Klaus all thinking they are mated to Elena in some strange new supernatural way.
One popular character could be Goku from Dragon Ball. His power levels and his journey towards becoming stronger could create an interesting dynamic with the god of destruction. Another might be Thanos from the Marvel Universe. Thanos' quest for balance through his own extreme means could have some parallels or clashes with the god of destruction's role. And of course, characters like Harry Potter could also be involved. Imagine the magic of the wizarding world coming up against the raw power of the god of destruction.
Ash Ketchum is often involved. In fanfiction, he might have a romantic relationship with Misty. Their on - screen chemistry in the anime makes it a popular choice for fanfic writers to explore a deeper romantic connection between them. Another popular character is Serena. There are many fanfictions where she has a romantic storyline with Ash as well. And then there's Gary Oak. He could be involved in romances, perhaps with a new character created by the fanfic author, or even with an existing female Trainer character.
Obviously, Harry Potter is one of the main characters. And for the werewolf, Remus Lupin is a very popular choice as he is a well - known werewolf character in the Harry Potter series.
Harry Potter is often a central character. Given his status as the Boy Who Lived, his connection to the wizarding world makes him a natural fit in stories about lordships. Hermione Granger could also be involved, using her intelligence to navigate the political intrigue. And of course, Ron Weasley, as Harry's best friend, would be there to support and get involved in the adventures related to the lordships.
Perhaps one of the mates is a fellow student at Bella's school. He could be a smart and kind human boy. And the other mate could be an otherworldly being, like a faerie with magical powers. This would create a really interesting dynamic as Bella tries to navigate relationships with such different individuals.
One popular theme is the interaction between characters from different shows within the crossover. For example, characters from 'The Vampire Diaries' might meet characters from 'The Originals' and have to work together or face off against a common enemy. Another theme could be the exploration of different magical elements. Since both shows have a lot of magic involved, fanfiction might delve deeper into how the magic systems interact. Also, romantic relationships between characters from the different shows can be a big draw. Fans often like to imagine their favorite characters from each show getting together in unique and interesting ways.
The Arbiter is another character. Given his complex relationship with the Covenant and his newfound alliance with the UNSC in the Halo series, his perspective would add depth to a crossover story. He could provide valuable insights to Noble 6 about the Covenant's inner workings and help in diplomatic situations if needed.
Well, from 'Supernatural', Sam and Dean Winchester could be involved. They could bring in a case where they suspect a supernatural cause for a patient's illness. Shaun would be skeptical at first but then start to see things in a new light as they investigate. It would be a mix of the medical and the supernatural worlds.
There could also be some minor characters from other families that become important in this fanfiction. For instance, a distant relative of the Lockwood family who shows up and causes a stir in the family affairs. They could bring new secrets and power dynamics to the story, changing the way the existing families interact with each other.