Another idea is that all the characters are now parents themselves. They have to balance their work at Monsters Inc with raising their own little monsters. It could show how they use their experiences as scared kids or scarers to be better parents.
I'm not sure specifically as there could be many novels with this title. But generally, it might be about the journey of characters as they transition from childhood to adulthood, dealing with new responsibilities, relationships, and self - discovery.
It's possible that there is a 'Rugrats All Grown Up' fanfiction with a pregnant teacher, but it's not something that is widely known or mainstream. The 'Rugrats All Grown Up' series usually focuses on the characters' growth and adventures in a more general sense. However, fanfiction allows for all kinds of creative interpretations, so some fan writer might have come up with such a story. You can start your search on popular fanfiction platforms like FanFiction.net or Archive of Our Own.
Charlotte's family members could also be main characters. Her parents, for instance, who have influenced her upbringing and continue to be part of her life as she grows. They might be shown guiding her through different life decisions or having their own story arcs that intersect with Charlotte's.
Some all grown up fanfiction might explore how the characters' childhood friendships have evolved. For example, they could be dealing with long - distance friendships or re - connecting after years apart. It could also show how their personalities have changed over time while still retaining some of their core traits from when they were younger.
It often depends on the original source material. If it's based on a kids' show, then the main characters would be the grown - up versions of those from the show.
One possible fanfiction could be about Tommy and Kimi going on an adventure together in their grown - up world. Maybe they are exploring a new city that has just opened up some sort of mystery park. They could be the ones to solve the mystery of the strange happenings in the park, using their friendship and the skills they've developed over the years.
In an all - grown - up Monsters Inc fanfic, the world itself could have evolved. There could be new technologies for scaring or collecting energy. The characters might have to adapt to these changes. And if Boo is all grown up and involved, she could bring a human perspective that helps the monsters improve their scaring business in unexpected ways. Maybe she could introduce new concepts from the human world that the monsters had never thought of, like different ways of using sounds or lights for scaring.
The fanfic might explore how the world of Beetlejuice has changed over time. It could introduce new rules or elements in the afterlife or the living world. For instance, new types of ghosts or supernatural entities could be introduced, and the grown - up characters have to deal with them in ways that are different from when they were younger. Also, the fanfic could delve into the backstories of the characters more deeply, now that they have more life experiences to draw from.