You can try Archive of Our Own (AO3). It has a large collection of fanfictions, including those for Trollhunters. The tagging system there makes it easy to find exactly what you're interested in.
First, be aware of the rating. Some fanfictions might contain elements that are not suitable for all audiences. Second, respect the author's work and don't plagiarize. If you like a story, leave a nice comment for the author.
The Trollhunters series has a really engaging world and characters. Fans love to explore different scenarios and relationships that might not be fully explored in the original show, so they turn to fanfic.
They could also be confused. The fanfiction might take the story in directions that are completely different from what they know. Like the trolls might not understand some of the modern or human - centric concepts that fans include in the stories. Angor Rot, for instance, might be baffled by the way fans sometimes portray him as having a change of heart in some fanfictions, when in his own mind his motives are clear.
Fanfiction.net is a well - known platform that could have Trollhunters fanfic. It has been around for a long time and has a wide range of fan - written stories across different genres and themes related to the show.
In a Jim x Morgana fanfiction, it could start with Morgana being trapped in a magical prison created by the Trollhunters long ago. Jim, out of his sense of justice and curiosity, decides to visit her. As he gets closer, he realizes that Morgana has a complex past and motives that are not entirely evil. Their interactions could then develop into a strange friendship that the other Trollhunters might not understand.
One idea could be that the characters from 3 Below end up in Arcadia Oaks where the Trollhunters are. They could team up to fight a common enemy that threatens both their worlds. Maybe the Gumm - Gumm trolls somehow form an alliance with the bad guys from 3 Below's planet, and the combined forces of the heroes have to stop them.
One great Steve x Eli fanfiction is 'The Unlikely Bond'. It beautifully explores their friendship evolving into something more. The author does a wonderful job of staying true to the characters' personalities from the show. Another one is 'Shared Secrets' which delves deep into their shared experiences and how it brings them closer. It has some really heart - warming scenes.
I'm not entirely sure if there is a specific 'Trollhunters' fanfiction where Barbra is pregnant. It's possible that some fans have written such a story, but it might not be very common. You could check fan - created forums or groups dedicated to 'Trollhunters' as well. Sometimes fans will share their own works or know of others that might fit this description. Another option is to reach out to other 'Trollhunters' fans directly and ask if they've come across any such fanfiction.
One interesting 'trollhunters fanfiction' story could be about an alternate universe where the trollhunters are from different time periods and have to team up. Another might focus on a character who was never fully developed in the original and gives them a more in - depth backstory. There are also those that explore romantic relationships between the characters in a new and unique way.