One idea could be an OC who is a lost spirit in the Unknown. They have the power to manipulate time briefly but don't fully understand it. They cross paths with Wirt and Greg and end up joining them on their journey, causing some unexpected time - loop situations along the way.
Perhaps an OC who is a minstrel from a far - off land in the Unknown. They are on a quest to find a special melody that is said to break any curse. When they meet Wirt and Greg, they believe that the boys might be the key to finding this melody, and so they team up, leading to a series of adventures filled with music and mystery.
Another interesting angle is to focus on the side characters. You could write a fanfiction about the Woodsman's past. What was his life like before he got trapped in the never - ending task of keeping the lantern lit? It could be a tragic love story or something related to his family.
Another interesting angle is to write from the perspective of one of the side characters in the show. For instance, the Woodsman. You could delve into his backstory, how he came to be in the service of the Beast, and his internal struggle between his love for his daughter and his fear of the Beast.
Some fanfiction might focus on the relationship between the main characters in different ways. For instance, exploring a more brotherly bond between Wirt and Greg that goes beyond what we saw in the original. It could show their growth together in different situations, like facing a new and even more terrifying creature in the Unknown.
Perhaps the OC is a foreign traveler who comes to visit the Great Wall. While there, they get lost in a restricted area and find a hidden passage. Inside, they find a community of people who have been living secretly near the wall for centuries. The OC becomes involved in their internal politics and helps them deal with a threat from the outside world that could expose their existence and endanger the Great Wall.
First, consider the aesthetic of the show. The OC should fit in with the dark, autumnal, and slightly surreal world of the Unknown. For example, give them clothing in earthy tones and perhaps a tattered cloak. Second, think about their backstory. Maybe they were once a normal person from a nearby village that got caught in the strange magic of the Unknown. Third, give them a unique ability or trait that is relevant to the world, like being able to communicate with the crows that are often seen in the show.
One interesting aspect is the story's setting. It creates a sort of otherworldly, autumnal atmosphere that is both nostalgic and mysterious. The use of different locations within this over - all world, like the Dark Lantern Hallow, adds to the sense of adventure and discovery. It's like every page is a new exploration.
A really interesting plot for Wall E and Eve fanfiction could be that they find a baby robot. They then have to figure out how to take care of it, which would be a completely new experience for them. It could lead to a lot of comical and heartwarming moments as they struggle to understand the needs of this new little one. Another plot could be that they encounter a group of rebel robots who are against the idea of humans returning to Earth, and Wall E and Eve have to convince them otherwise. There could also be a plot where they discover a hidden message from the past about the true origin of the plants on Earth, and they go on a quest to uncover the mystery.
No, it wasn't. Over the Garden Wall originated as an animated television miniseries.
Another plot could revolve around an OC who is a Spartan trainee that doesn't quite fit the mold. They have a different way of thinking and approaching combat. In Halo 4, they end up being the key to solving a mystery related to the Prometheans. Maybe they find a way to communicate with the Prometheans and convince some of them to stop fighting the humans.
One idea could be an Otsutsuki OC who comes to Earth not for conquest but to study the unique life forms here. They could befriend some of the local ninjas and learn about the concept of friendship, which is alien to the Otsutsuki. This would lead to a series of adventures where they have to protect their new friends from other more hostile Otsutsuki members.