In this kind of fanfiction, the Empire's arrival on Earth would change everything. They might be interested in Earth's biological diversity for their own experiments. The Jedi, if they somehow got involved, could either help Earth or have their own agenda. Also, the political situation on Earth would be turned upside down. Nations might have to unite against the common threat of the Empire. And there could be interesting character interactions, like an Earthling befriending a stormtrooper who starts to question the Empire's ways.
One possible main character could be an Earth scientist. They would be in a unique position to study the Empire's technology and try to find a way to defend Earth.
If the Star Wars Empire invaded Earth, it would be chaos. Their advanced weaponry like blasters and starships would overpower our current defenses. Earth's militaries would struggle to fight against stormtroopers and AT - AT walkers. Maybe some groups would try to form a resistance, just like in the Star Wars movies.
The droids in Star Wars could be used by the Earth Empire for various tasks. However, they might also face issues like compatibility with Earth's power sources. And the hyperdrive technology from Star Wars could revolutionize Earth Empire's space exploration capabilities if they could figure out how to integrate it into their existing spacecraft.
Maybe the United Earth Empire in the fanfiction tries to form an alliance with some of the more neutral factions in the Star Wars universe, like the Hutts. They offer their advanced technology in exchange for resources. But things go awry when a Sith Lord sees this as an opportunity to take over both the Empire and the Hutts' territory.
In such a fanfic, there could be epic battles. The Empire's advanced weaponry like the Death Star might be used against Earth's defenses. Maybe the Rebel Alliance would also get involved, teaming up with Earth's forces to fight the common enemy.
Well, one possibility is that the technology from Star Wars would start to merge with Earth's. Droids could become common household items, helping with daily chores. And starships might be parked in our skies, changing the whole dynamic of Earth's society as people try to figure out how to interact with these new, alien things.
One common theme is culture shock. The Star Wars characters are used to their own galaxy's cultures, and when they land on Earth, they're often shocked by the differences. For example, they might be baffled by Earth's many languages or the way we use technology in different ways.
Perhaps Sabine finds Ezra on a planet that is filled with dark side energy. Ezra has been struggling to resist it. Sabine has to not only rescue him but also help him cleanse the dark side influence from his mind. This would involve a lot of emotional and spiritual growth for Ezra, with Sabine as his support.
A character could be a Force - sensitive child from the United Earth Empire. He was born with this power but was hidden away on Earth. When the Empire discovers his abilities, they want to use him as a weapon. However, he is befriended by a group of rebels who help him understand the true nature of the Force and fight against the Empire's evil plans.
In a Star Wars droid on Earth fanfiction, the droid's arrival would be a game - changer. It could communicate in ways we don't understand at first. If it was a protocol droid like C - 3PO, it might try to establish diplomatic relations, which would be really strange considering we don't have other planets to have diplomacy with in the same sense. It could also introduce new concepts of engineering and mechanics that could revolutionize our technology, but it would also face the challenge of being an alien entity in a world that might not be ready for it.