One possible plot could be that Wanda's pregnancy brings a new dynamic to the Hotel Transylvania. The other monsters are excited yet also a bit worried about how a new baby monster will fit in. Dracula might offer his wisdom on raising a little one, as he has experience with Mavis. Wanda's partner would be extra protective, and there could be comical scenes of him trying to prepare the perfect nursery within the hotel, while also dealing with the various antics of the other hotel guests.
Perhaps the pregnancy is a bit of a shock to everyone. Wanda could be the first of her kind to be pregnant in the hotel. This leads to a lot of speculation and superstition among the other monsters. Some might think it's a sign of good luck, while others are afraid it could bring unwanted attention from the outside human world. Meanwhile, Wanda is just trying to enjoy her pregnancy and deal with the normal pregnancy symptoms like any expectant mother, but in a very monster - filled environment.
In the fanfiction, Wanda's pregnancy could lead to a discovery of new powers or abilities related to motherhood within the world of Hotel Transylvania. Maybe as she progresses in her pregnancy, she starts to emit a special kind of energy that affects the other monsters in different ways. Some become more gentle and nurturing, while others become a bit more chaotic as they're not used to such a positive energy in the usually spooky hotel. Her pregnancy could also be a catalyst for bringing different monster species closer together as they all look forward to the new arrival.
A fanfiction might focus on the challenges Mavis faces during her pregnancy. Since she is a vampire, there could be unique vampire - related health concerns. She might need to find a special diet that suits both her and the baby. Also, she has to deal with the pressure of being the first vampire - human hybrid to have a child in a long time. The story could detail her journey to find solutions to these problems while still being excited about the new life on the way.
One possible story could be that Martha's pregnancy brings a new sense of family unity in the Hotel Transylvania. Dracula and the other monsters might be super excited and start preparing for the new arrival in their own unique, spooky ways. They could be planning a huge baby shower with all the ghoulish treats and decorations that only they could come up with.
One possible fanfic idea could be that Mavis discovers she's pregnant and there's a lot of chaos in the hotel as everyone tries to prepare for the new addition. Dracula might be overprotective and start making all kinds of crazy arrangements to keep Mavis and the unborn baby safe. The other monsters in the hotel could also have their own reactions, like Frankenstein being excited to have a new little friend to play with in the future.
Well, she could start having strange cravings. Maybe she'd crave human food that Johnny likes, which would be really odd for a vampire. This could lead to some funny scenes where she tries to get the kitchen staff to make these strange combinations.
One possible plot could be that Johnny is accidentally turned into a vampire. He then has to deal with the shock of his new state while also trying not to worry his human family. He could rely on Mavis and Dracula for support and guidance in learning about his new powers and limitations.
One possible plot could be that Naruto, being a curious ninja, somehow ends up in the world of Hotel Transylvania. He meets Mavis and they become friends. Naruto could show Mavis some of his ninja skills, like creating clones or running on water. They might team up to solve a problem in the hotel, like when a group of mischievous vampires cause trouble. Naruto's positive attitude and determination could inspire Mavis to be more adventurous outside of the hotel's usual routine.
Well, in this kind of fanfic, there could be a lot of comical situations. For example, the werewolves in the hotel might offer to be guards for Mavis, but they end up being a bit too overzealous and accidentally causing small disasters. And Mavis could start to develop new powers during her pregnancy that she has to learn to control.
It could strengthen some relationships. For example, her relationship with her partner would likely become deeper as they prepare for the baby. Her friends in the hotel, like Frankenstein and his bride, might become more protective and offer their support. Dracula, as the owner of the hotel, would probably become more involved too, seeing Wanda's baby as part of the hotel's future family.
One possible plot idea could be that Angel Dust discovers he's pregnant and has to deal with the shock and confusion. He might struggle with how the other characters in Hazbin Hotel will react, especially considering his past and his reputation. Maybe he tries to hide it at first but then realizes he needs support.
I'm not sure if there are many fanfictions specifically about Ian and Wanda being pregnant in 'The Host'. However, in general, such a fanfiction might explore how their relationship would change with the addition of a baby. It could also involve the challenges they might face in the unique world of 'The Host' while raising a child.