A great fanfiction could revolve around the origin of the Swap Force. You could explore how the concept of swapping parts came to be in the Skylanders world. Maybe it was a result of an ancient magic experiment gone wrong or right, and how this ability has shaped the battles and relationships in Skylands.
You could write a fanfiction where the Swap Force has to team up with their arch - enemies to face a common, greater threat. This could lead to some really interesting character development, like a villain realizing there's more to life than causing chaos, or a Skylander learning that not all enemies are completely bad. There could be a lot of tension and conflict within the team as they try to work together despite their differences.
Another popular character is Stealth Elf. Her agility and stealth skills can add an element of mystery and excitement to a fanfiction. You could write about her secret missions or her training of other Skylanders in the art of stealth.
One idea could be to have characters from different Skylanders groups team up to face a new, super - powerful villain. For example, the Trap Masters and the Giants could combine their forces.
Perhaps the Skylanders enter the Naruto universe. They could be mistaken for some kind of new ninja jutsu or summoned creatures at first. Then, they work together with the ninja to protect Konoha from a major threat, like an invasion of powerful demons. The Skylanders' different abilities, such as Spyro's fire - breathing or Stealth Elf's stealth, would add new elements to the battles in the Naruto world.
One idea could be a story where a young Skylander discovers a hidden dragon egg. The Skylander then has to protect the egg from the evil forces in Skylands who want to use the dragon for their own dark purposes. As the egg hatches, a bond forms between the Skylander and the dragon, and they go on adventures together to stop the villains.
One idea could be Dark Spyro's struggle to control his dark powers while trying to protect his friends. Maybe he has to face an ancient evil that only his dark powers can defeat, but using them risks corrupting him completely.
One idea could be exploring the backstory of Rey's parents in more detail. Maybe they were part of a secret Jedi order that was in hiding. Another could be a story about Finn's life before he defected from the First Order, like his training and relationships with other stormtroopers. Also, a fanfiction could focus on Kylo Ren's struggle with the light side of the Force that he tries to suppress.
You could also write about Naruto forming a special force within the Hidden Leaf Village. This force would consist of some of the most talented ninja from different clans. They would be trained by Naruto himself to face threats that are beyond the capabilities of the regular ninja forces. It could explore how Naruto's leadership skills and his understanding of different ninja abilities would help in creating a formidable team.
You could write a fanfiction that delves deeper into the relationship between Arthur and Shinra. Maybe they get into a big argument over their different approaches to being a hero. Shinra believes in using his powers for the greater good in a more practical way, while Arthur is all about living out his 'knight in shining armor' fantasy. This argument could lead to them going their separate ways for a while, and then having to come back together to face a powerful Infernal that neither of them could defeat alone.
One idea could be that Spyro and Cynder have to team up to face a new, powerful enemy that threatens the Skylands. They start off a bit at odds due to their different personalities but gradually learn to work together better.
A really interesting plot could be that Spyro and Cynder accidentally swap powers. This would lead to a lot of comical and also challenging situations as they try to figure out how to use each other's abilities and also deal with the villains who take advantage of their confusion. They would have to rely on their friendship and understanding of each other more than ever.