Another idea is a setting where the two worlds are merging. Percy and Magnus find themselves in a strange new place that has elements of both Camp Half - Blood and the Hotel Valhalla. They have to figure out how to survive in this new world while also dealing with the chaos that the merging is causing. The characters from both series could interact in interesting ways, like Annabeth and Samirah comparing their knowledge of architecture and magic respectively.
One great fanfic is 'The Adventures Beyond Borders'. It combines the worlds of Magnus Chase and Percy Jackson in a really cool way. The characters interact in a believable manner, and the plot is full of action and adventure. It has some really exciting fight scenes and also delves into the relationships between the different characters from both series.
First, do your research on both series. Know the characters, their abilities, and the rules of their respective worlds. For example, Percy can control water because he's Poseidon's son, and Magnus has the power of Sumarbrander, his magical sword. When you write their interactions, make sure it's consistent with their personalities. Percy is often impulsive and loyal, while Magnus is more laid - back and has a sarcastic sense of humor. Make sure their dialogue reflects this.
One idea could be a quest where Magnus and Percy have to team up to retrieve a powerful artifact that is causing chaos in both their worlds. Maybe it's an ancient Norse and Greek combined relic that only their combined skills can handle.
A good fanfic should have a well - developed plot. For example, it could involve a new threat that requires both Magnus Chase and Percy Jackson to team up. It should also stay true to the original characters' personalities. Percy is brave and impulsive, while Magnus is more of a reluctant hero, and these traits should be maintained.
One idea could be a quest where Magnus and Percy have to team up. Maybe there's a new threat that combines the Norse and Greek mythologies, like a monster that has the powers of both a Greek hydra and a Norse dragon. They would have to use their different skills and knowledge to defeat it.
Percy's water - based powers and Magnus's ability to communicate with the dead could create some really interesting scenarios. For instance, Percy could use water to expose hidden passages in cemeteries where Magnus could then communicate with the spirits to get information.
You can start by looking on fanfiction platforms like Archive of Our Own (AO3). There are countless stories there. Just search for 'Magnus Chase Percy Jackson' and you'll get a ton of results. Some are crossovers that combine the two universes in really interesting ways, like having the characters meet and go on adventures together.
If Percy reads positive fanfiction about Magnus, he might develop a new - found respect for him. He could start to think of Magnus as more of an equal in the world of demigods, even though they are from different mythologies. For instance, if the fanfiction shows Magnus doing heroic deeds, Percy would recognize the similarities between their roles as heroes. However, if the fanfiction portrays Magnus in a negative way, Percy might be a bit more cautious around him, wondering if there's some truth to those made - up aspects.
One idea could be a crossover where Percy and Magnus have to team up to defeat a common enemy that threatens both their worlds. Maybe a primordial being that can disrupt the balance of both the Greek and Norse mythologies.
Well, it's really hard to say. Percy has his water powers and his combat skills which are no joke. But Magnus has his own set of powers and his connection to Norse mythology is super strong. If it's a battle in water, Percy might have the upper hand. However, if it's in a more Norse - related environment like a frozen tundra or near a great hall in Asgard, Magnus could use the elements of his world to his advantage.