A good one would be the contrast between their personalities. The Mikaelson sister is often associated with family values and a certain kind of vampire - related magic. Loki, on the other hand, is the god of mischief. So, when their worlds collide, the resulting clash and then the slow - burn of their relationship makes it interesting.
A great fanfic could explore how the Mikaelson sister, with her family's long history and secrets, and Loki, who is full of his own deceptions and schemes, find common ground in their love. Their relationship might be a rocky one at first. For example, Loki might try to use the Mikaelson sister for his own gain, but then truly falls for her, leading to a story of redemption and love against all odds.
One common theme is the clash of different magical systems. Loki has his Asgardian magic and the Mikaelson hybrid has their own brand of supernatural powers. This often leads to power struggles and interesting dynamics.
There's also a character named Sophia in some fanfictions. Sophia is written as very intelligent. She uses her wits to outsmart her family's enemies. She has a great relationship with her brothers, especially Klaus. They have a deep bond that is explored in the fanfiction, and she often helps him see reason when he's about to make a rash decision.
One popular 'loki x hybrid mikaelson' fanfiction is 'The Unlikely Alliance'. It delves into how Loki and a Mikaelson hybrid come together in a world filled with magic and mystery. Their relationship is a complex one, starting from mutual suspicion to gradually developing respect and a deeper connection.
One common theme is family loyalty. In many fanfictions, Hope's sister will go to great lengths to protect the family name and her siblings. For example, she might face off against powerful enemies who are threatening the Mikaelsons. Another theme is self - discovery. Since the Mikaelson family is full of complex characters, the sister often has to figure out who she is and what her place is within the family and the supernatural world.
Family loyalty is also a big theme. The twin sister is part of the Mikaelson family, and in many fanfictions, she has to deal with the complex relationships within the family. There could be situations where she has to choose between different family members' wishes or protect the family from a new threat, even if it means sacrificing her own desires.
A possible plot is that the lost sister was sent to another dimension by a powerful witch as a means of protecting her from the chaos in the Mikaelson world. In the fanfiction, she grows up in this strange dimension, learning different forms of magic. When she finds a way back to her own world, she meets Hope. Together, they have to face a new enemy that is targeting the Mikaelson family because of their combined power.
Some fanfictions introduce new vampire characters who are rivals to Klaus but end up having an unexpected connection with his twin sister. These characters can be really engaging as they bring new conflicts and relationships into the story. They can be used to explore different aspects of the vampire lore and the power dynamics within the supernatural community.
One idea could be a story where Loki teams up with the Winchester sister to battle a common supernatural foe. Maybe they start off distrusting each other, but as they face challenges, they learn to work together. Loki's trickery could be both an asset and a source of conflict in their partnership.