Yes, there are likely to be such fanfics. Fanfic writers often explore unique relationships in their works, and the idea of Marcel calling Klaus 'dad' can add an interesting dynamic to a story. You can try searching on fanfic platforms like Archive of Our Own or Fanfiction.net.
There might be. Many fanfic writers like to create stories that play with the family or surrogate family relationships in the shows or books they are fans of. So it's quite possible that someone has written a fanfic where Marcel refers to Klaus as dad. You could also check out some fan communities on social media platforms to see if anyone can recommend such a fanfic.
The plot could involve Marcel having a crisis where he realizes that his biological family has let him down in some way, and Klaus, who has been there for him in many situations, becomes the person he looks to as a father. Maybe Marcel gets into trouble with other vampire factions, and Klaus is the one who steps in to save him, leading to this newfound father - son relationship.
I'm not aware of any such fanfic. Fanfics often vary widely in their nature and availability, and this type of content may not be suitable or widely distributed due to its inappropriate nature.
Well, in a fanfiction scenario, if Bella were to be pregnant in a story involving Klaus and Marcel, it could create a whole lot of drama. Maybe Klaus would be jealous of Marcel's closeness to Bella. Or perhaps Marcel would see the baby as a threat to his relationship with either Bella or Klaus. It could also lead to a power struggle between Klaus and Marcel over the unborn child.
One possible plot could be that Teddy has grown up without a strong father figure and as he gets to know Harry better, he starts to see Harry as a dad. Maybe Teddy has some troubles at school or in his personal life and Harry steps in to offer guidance and support, which makes Teddy feel like he finally has a real father.
I'm not sure of a specific 'teddy calls harry dad fanfic' off the top of my head. You could try searching on fanfic platforms like Archive of Our Own. There are likely to be many fan - created stories there that might match what you're looking for.
Another theme is growth. Megumi's growth as a person and as a sorcerer is often tied to his relationship with Gojo. In these fanfics, Gojo's influence helps Megumi become stronger, not just in terms of his abilities but also in his emotional maturity. For instance, Gojo might teach Megumi how to handle difficult situations, which in turn helps Megumi grow. And of course, the theme of love is there. It might not be a romantic love, but the love between a father and son. Gojo's care for Megumi and Megumi's acceptance of Gojo as a father figure is a central part of these fanfics. It gives a warm and fuzzy feeling to the readers.
I'm not sure about the name exactly, but there are some fanfics where Megumi calls Gojo dad in a more action - packed setting. For example, in some where they are fighting curses together. Megumi's respect for Gojo as a father - like figure is shown through their teamwork and how Gojo protects Megumi during battles.
One possibility is that Klaus would try to claim the baby as his own, regardless of who the father really was. He's a possessive character, and having a child with Bella could be a way for him to have more power or control. Marcel, on the other hand, might be more concerned about Bella's well - being.
Yes, there are likely some out there. Fanfiction is a vast world, and many creative fans come up with all sorts of unique family relationships in their stories. You can try searching on popular fanfiction websites like Archive of Our Own or Fanfiction.net. Just type in 'Harry is Klaus son' in the search bar and see what pops up.
There may be some fan - made works out there, but engaging with sexual fanfiction is not in good taste. It's important to respect the source material and the characters. You could try to find fanfiction that focuses on their growth as individuals, like how Klaus becomes more confident or Isadora discovers new talents.