Well, Sven could be in it. Since he is Kristoff's reindeer, he could be part of the group's travels or just be there as a cute addition. The Duke of Weselton might be a character too, perhaps causing some trouble for Anna and the baby. And the trolls could be included. They are wise in the Frozen world and could offer advice to Anna regarding the baby.
Olaf could be important. He might be like a fun - loving babysitter, always making the baby laugh with his goofy antics.
Fanfiction often takes beloved characters like Anna and gives them new life situations. If Anna has a baby, it might also involve how her relationship with Elsa changes. Elsa could be the protective aunt, and their bond could grow stronger as they both care for the new addition to the family. The fanfiction could explore the baby's role in bringing the sisters even closer together.
One idea could be that their baby has a special power related to ice like Anna and Elsa. Maybe the baby can create beautiful ice sculptures at a very young age. This would add a new element to the Frozen world and also show how the family's powers are passed down.
Expect the fanfiction to involve a lot of the Frozen world's elements. The baby could have a special connection to the snow and ice, just like Elsa. Or perhaps the baby's birth could be linked to some sort of magical event in Arendelle, like the return of a long - lost magic. It could also show how Anna's friends, like Kristoff, Sven, and Olaf, interact with the new baby and become part of its life.
Well, often the theme of growth and learning is common. The baby in the fanfiction could be learning from Anna about the world around it. Magic can also be a theme. Given the magical elements in Frozen, perhaps the baby has some unique magical ability that Anna helps it understand and control. And of course, the theme of love. Anna's loving personality can influence the baby and the relationships in the story.
One great fanfiction could be where Anna and Kristoff's baby has a special connection to the magic of Arendelle. Maybe the baby can communicate with the spirits of the forest like Elsa. Another story might focus on the challenges of raising a baby in a kingdom with so much history and responsibility.
You can try fanfiction websites like Archive of Our Own. There are often many different fanfictions about various characters and scenarios from Frozen, including those about Anna, Kristoff and their baby.
There might also be new characters introduced specifically for the fanfiction. For example, a wise old woman who lives in the forest and has knowledge about the baby's true nature. She could guide Anna and Elsa on how to raise the baby and deal with any challenges that come with it.
One common theme is the bond between the sisters. Even as babies, they have a special connection that is often explored in these fanfictions. For example, how they comfort each other when they are scared or how they share their little joys.
Love is a very common theme. It shows how Anna and Bates' love for each other extends to their love for their baby. Their relationship becomes even more profound as they share the experience of raising a child.