One interesting plot idea could be Thorn being transported to a different era in the Star Wars universe through some sort of time - warp anomaly. He could then have to team up with unlikely allies to get back to his own time. Another idea is that Thorn could cross over into a parallel Star Wars universe where the rules are slightly different and he has to adapt quickly. Maybe he finds himself in a universe where the Sith are in control and he has to lead a rebellion.
Well, a plot could involve Thorn getting stranded on a planet filled with strange and powerful creatures. In this fanfiction, he meets a group of smugglers who are also hiding from the Empire. Together, they form an alliance to not only survive but also to uncover a hidden secret on the planet that could change the balance of power in the galaxy. It could also be that Thorn's skills are recognized by a long - lost Jedi order in a crossover, and he has to train with them to defeat a new threat.
Han Solo could be an ideal crossover partner for Thorn. Han is a skilled pilot and a bit of a rogue. He and Thorn could get into all sorts of adventures together, smuggling goods or escaping from the Empire. Another good partner could be Ahsoka Tano. She has great combat skills and knowledge of the Force. Thorn could learn a lot from her, and they could fight side by side against common enemies.
One great story could be about Commander Thorn's early days in the military academy. It might show his determination and the challenges he faced while training. Another could focus on a mission where he has to make a tough decision that tests his loyalty to the Republic.
Often, other clone troopers are paired with him. They share a brotherly bond in the fanfiction, and they fight side by side. For instance, Rex might be a common character paired with Thorn, as they both are important figures in the clone army.
A great plot could be that Master Chief somehow gets transported to the Star Wars universe. He could find himself in the middle of a battle between the Sith and the Jedi. His combat skills and advanced armor would be a huge asset to either side. Or perhaps there could be a story where the Forerunners have some ancient connection to the Force in the Star Wars galaxy. This could lead to a search for lost Forerunner technology that could change the balance of power in the Star Wars universe.
Perhaps in a Star Wars Twilight crossover fanfiction, the Force could be seen as a kind of super - power in the Twilight universe. A Jedi could come to train the Twilight characters in how to use this 'new' power. They would have to adapt their Jedi teachings to fit the different nature of the Twilight world, which has its own set of rules regarding vampires and werewolves.
One plot idea could be Superman being transported to the Star Wars universe. He might use his powers to help the Rebel Alliance. For example, his super strength could be used to move large objects during battles or his heat vision to take out enemy ships. Another idea is that he teams up with Jedi. He could learn about the Force and they could combine their powers to fight the Sith.
One idea could be Jedi coming to Earth to train a select group of humans with Force - like abilities. Another could be a Sith Lord arriving on Earth and causing chaos, and Earth's heroes have to team up with Star Wars characters to stop him. Maybe there's a discovery of a hidden Star Wars - related artifact on Earth that has the power to change the balance of the Force.
One plot idea could be Thrawn crossing over into an alternate Star Wars timeline where the Jedi Order never fell. He could find himself in a situation where he has to adapt to a galaxy full of powerful Jedi. Another idea is a crossover with a different sci - fi universe, like Star Trek. Thrawn might use his tactical genius to face off against the Federation. Or perhaps a crossover with a post - apocalyptic Star Wars setting, where Thrawn has to lead a group of survivors against new threats.
One idea could be that the Spartans from Halo are sent through a wormhole and end up in the Star Wars galaxy. They could then get involved in the Clone Wars, with their advanced technology and combat skills being a huge asset or a source of great confusion among the different factions. Maybe they team up with the Jedi at first, but then some misunderstandings occur due to their different ways of handling situations.
One idea could be a group of Guardians from Destiny being transported to the Star Wars universe. They could team up with the Jedi to fight against the Sith and the Darkness that threatens both universes. Maybe they would introduce their advanced weaponry and abilities to the Star Wars characters.