One plot idea could be that your SI OC is a young Force - sensitive being discovered by the Jedi Order, but they have a connection to an ancient Sith prophecy. The Jedi must decide whether to train them or fear their potential for darkness. Another idea is that your OC is a bounty hunter who gets caught in the middle of a power struggle between the Hutts and a new criminal syndicate. They have to use their wits and skills to survive and maybe even tip the balance of power.
A great plot idea for SI OC Star Wars fanfiction is if your OC is a mechanic on a small, remote planet. They accidentally discover a crashed Imperial ship with a secret weapon. Now they have to decide what to do with it. Do they sell it to the highest bidder? Or do they try to get it to the Rebel Alliance? Meanwhile, the Empire is looking for the weapon and will stop at nothing to get it back. This can lead to a lot of action - packed scenes and moral dilemmas for your OC. Also, your OC could be an ex - Jedi who has lost their connection to the Force but finds a way to regain it in an unexpected way, like through an ancient Jedi ritual on a forgotten planet.
The SI could be a smuggler who crosses paths with Anakin during one of his missions. They team up and the SI shows Anakin a different side of the galaxy, one that's not all about the Jedi and Sith. This could make Anakin question his place in the galaxy and his loyalty to the Jedi Order. Their adventures together could range from dealing with pirates to uncovering ancient secrets.
First, think about the Star Wars universe's different species, cultures, and planets. For example, if your OC is from Tatooine, they might be tough and resourceful like the native Tuskens. Then, give them a unique backstory. Maybe they were orphaned during a Sith raid and have a vendetta against the dark side. Also, consider their skills. It could be something like exceptional piloting skills or a natural ability with the Force that sets them apart.
One popular plot idea is a self - insert character becoming a Jedi and influencing the events of the Clone Wars in unexpected ways. For example, they might prevent certain battles or form alliances that weren't in the original story.
A great plot idea could be that your male OC discovers an ancient Sith artifact that has the power to change the balance of the Force. He then has to decide whether to use it for his own gain or destroy it. Another idea is that he is mistaken for a Jedi and is hunted by the Empire. He has to learn about the Jedi ways quickly to survive. Or, he could be part of a rebellion on a small planet that the Empire has overlooked, but his actions draw the attention of the Emperor.
Here are some plot ideas. Your OC could be a smuggler who accidentally gets involved in a Jedi - Sith conflict when they pick up the wrong cargo. This cargo turns out to be a powerful Jedi relic that the Sith will stop at nothing to get. Or your OC is an alien from a newly discovered species, and they are trying to prove the worth of their species to the rest of the galaxy. They get caught up in a political intrigue within the Galactic Senate. Also, what if your OC is a mechanic who discovers a way to enhance starship engines to make them faster than the Millennium Falcon? But they have to keep it a secret from the Empire while also dealing with rival mechanics who want to steal their idea.
There's also 'Galactic Adventures of a SI'. This fanfic is amazing as it combines elements from different eras of Star Wars. The SI character has to navigate the complex politics and power struggles within the galaxy. It's full of action - packed scenes and the author does a wonderful job of creating new and exciting storylines while still respecting the Star Wars lore.
Well, a cool plot for a Star Wars Mandalorian SI fanfiction could involve the self - insert being a former Jedi in hiding. They could use their Jedi training secretly to help the Mandalorian and Grogu. Maybe they teach Grogu some new skills that are a blend of Jedi and Mandalorian ways. Also, the self - insert could have a past connection to the Sith, which adds an interesting layer of conflict as they struggle not to be drawn back to the dark side while helping the Mandalorian. Another idea is that the self - insert is an artist who uses their art to document the adventures of the Mandalorian, and in the process, their art gains some sort of magical or important significance in the Star Wars galaxy.
One plot idea could be that the OC is a secret agent working for the Republic and is assigned to protect Riyo Chuchi during a crucial diplomatic mission. Along the way, they face attacks from Separatist assassins and have to use their wits and skills to keep her safe.
Maybe the fem OC is a bounty hunter who gets caught in the middle of the Clone Wars. She is hired by the Republic to track down a Separatist spy, but as she gets closer to finding the spy, she realizes that there are deeper conspiracies at play. The Republic might not be as pure as it seems, and she has to decide which side she really wants to be on.
A very popular theme is redemption. The SI OC might have made mistakes in their own world or in the Star Wars universe and are seeking to make amends. For example, they could be trying to redeem a villain or themselves. And friendship is also a big theme. They form bonds with existing Star Wars characters, like becoming friends with a Jedi or a smuggler, which helps them on their journey.