An OC could be a stowaway on the ship in the 'lost in space' universe. This stowaway has a mysterious past and special skills, like being able to communicate with an alien species that the main crew doesn't know about. Their presence could cause both chaos and new opportunities for the crew as they try to find their way home.
Maybe an OC who is a young prodigy in the field of astrophysics. They joined the mission as an assistant but end up being the key to understanding a strange space phenomenon that the crew encounters. They have to overcome the doubts of the more experienced crew members and prove their worth.
An interesting concept for a 'lost in space oc fanfic' could be an OC who is a psychic. In the vastness of space, their psychic abilities start to act up in strange ways. They can sense danger before it arrives or even have visions of a way back home. But the crew is skeptical at first, and the OC has to convince them of the authenticity of their powers while also dealing with the chaos of being lost in space.
Well, you could have an OC who is an alien with special powers that are different from the normal Semblances in RWBY. For example, they can control gravity in a way that gives them an edge in combat. Or an OC that is a diplomat from a space - faring civilization trying to make peace between different kingdoms on Remnant. Also, an OC who was stranded on Remnant after their spaceship crashed and has to adapt to the world while also trying to find a way back home.
One idea could be creating an OC who is a skilled mechanic from a far - off planet. They could join the crew of the Galaxy One and use their unique mechanical skills to fix and upgrade the ship in ways that the others can't. Maybe they have a special tool that was passed down in their family for generations.
One idea could be that the OC has a hidden past that somehow links to Sawyer's own backstory. For example, the OC was involved in the same con that Sawyer was once a part of but on the other side of the deal. This could create a lot of tension and mystery as they interact.
One idea could be that the OC (original character) is a time - traveler from modern times who has read 'Pride and Prejudice' extensively. She arrives in Austen's world and tries to use her knowledge of the book to her advantage, but ends up changing the story in unexpected ways. For example, she might accidentally introduce modern concepts like feminism to the female characters, which then causes a stir among the society in the story.
Well, an interesting plot for an Atlantis the Lost Empire OC fanfiction could be an OC with a special connection to the Atlantean crystals. Maybe the OC discovers that they can communicate with the crystals in a way no one else can. This could lead to uncovering secrets about Atlantis' past and future. Or perhaps an OC who is an outcast in their own world and finds acceptance in Atlantis. They could bring new ideas and skills to the Atlantean society, like a new form of art or music. Also, an OC could be a time - traveler who ends up in Atlantis. Their knowledge of the future could either help or endanger Atlantis, depending on their actions.
One idea could be exploring an alternate reality where the moon's journey through space leads it to a parallel universe filled with benevolent alien races that offer to help the moonbase inhabitants. Another could be a time - travel plot where the crew of Space 1999 travels back in time to Earth before the moon was blasted out of orbit and tries to prevent the cataclysm that sent them into space. A third idea might be a story focused on the personal relationships of the crew members during a long - term crisis situation on the moonbase.
Perhaps a key idea in this fanfic is the mystery surrounding the lost primarchs. Their very existence being a secret could be used to create a sense of intrigue. The fanfic might explore how rumors and half - truths about them spread among different factions, and how these rumors influenced the actions and beliefs of various characters.
One idea could be creating an OC who has a unique power related to time manipulation. They could be from a different dimension and end up in the Avengers' world. Another idea is an OC who is a master of ancient magic and teams up with Doctor Strange within the Avengers group. Maybe an OC that is a super - intelligent android created by a villain but has a change of heart and joins the Avengers.
You could create an OC for your Persona OC fanfiction who is an artist. This artist OC could use their art as a way to understand and even manipulate the Metaverse. For example, they might draw scenes from the Metaverse that give clues about upcoming events or hidden locations. Their art could also be a form of therapy for other characters who are struggling with their dual lives in the real world and the Metaverse.