Another option could be a character from a different fictional universe in crossover fanfictions. For example, a character like Jack Frost from Rise of the Guardians. Writers might bring these two together because they both have powers related to ice and snow, and it could make for an interesting dynamic as they explore their powers together and develop feelings for each other.
Kristoff could be a good love interest. He's already a part of Elsa's world in the Frozen movies. He's brave, kind, and used to the cold climate of Arendelle. His relationship with Sven also shows his caring side, which could attract Elsa.
There could also be a scenario where Elsa's love interest is a reformed villain. Maybe someone who once opposed Elsa but then sees the good in her and tries to make amends. This could lead to a relationship full of redemption and growth as they both learn from each other's pasts.
Perhaps it could be Kristoff. Although he was more interested in Anna in the original story, in fanfiction, the relationships can be reimagined. They could have developed a closer bond over time and he could be the father.
It could be a power - hungry villain. Someone who sees Elsa's powers as a means to gain more control. Maybe a dark wizard or a warlord.
Maybe it was someone from Elsa's past that we don't know much about yet. For example, a childhood friend who she had lost touch with but who returned to her life. They rekindled their friendship which then turned into a deeper relationship, resulting in her pregnancy.
It could be a vampire lord who has a vendetta against Elsa's family. He believes that they have something that belongs to him, and when he discovers Elsa, he decides to use her as a pawn in his scheme. This vampire lord is cruel and calculating, and he has an army of minion vampires at his disposal. He uses his charm and power to manipulate those around Elsa and tries to isolate her so that he can achieve his goals. He is also very strong and has abilities that make him a formidable foe for Elsa.
Anna would surely be the first to help Elsa. Anna has always been there for her sister, and when Elsa gets sick, she would do everything she could, like bringing her warm soups and staying by her side to keep her company.
Well, in fanfiction, the rules can be bent. For Elsa to be pregnant, it could be part of a 'what if' scenario. What if Elsa had a different upbringing and was more open to relationships earlier? This could lead to a situation where she becomes pregnant. It might also involve some sort of prophecy or magical destiny that was previously unknown in the Frozen story, which now unfolds in the fanfiction.
Fanfiction about Elsa and Anna's love, whether it's sisterly or otherwise, keeps the Frozen fandom alive and engaged. It encourages fans to be creative and share their own interpretations of the characters. By reading and writing these fanfictions, fans can connect with each other and discuss different ideas. This also helps in spreading the love for the Frozen franchise even more. It can inspire fan art and other forms of fan creations too.
The trolls could play an important role. They are mysterious and have their own magic. In dark Elsa fanfiction, they might be the ones who try to either contain Elsa's dark powers or guide her towards using them in a more positive way. Also, a new character could be introduced, like a powerful sorcerer from a far - off land who is either drawn to Elsa's powers or sees her as a threat and wants to eliminate her.