A new and original villain could be created. For example, a powerful sorcerer who has studied both Greek and Norse magic and wants to use that knowledge to rule over all demigods. This villain could start by causing small disruptions in both worlds, like making the magic in Camp Half - Blood go haywire and causing the Bifrost to malfunction in the Norse world. Percy and Magnus would have to figure out what is going on and stop this new threat before it's too late.
The Titans from Greek mythology could also be a good choice. Imagine if the Titans, who are still bitter about their defeat by the Olympians, team up with some of the more malevolent Norse giants. They could try to take over both the Greek and Norse realms, forcing Percy and Magnus to join forces to stop them.
Loki could be a great villain. He's known for his trickery in Norse mythology. He could manipulate events to set Magnus and Percy against each other. Maybe he wants to cause chaos between the Norse and Greek worlds for his own amusement or to gain more power.
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.
Percy would be very interesting. His charm and his ability to get into and out of trouble are always fun to read about.
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.
Another pairing that might be popular is Jack (Magnus' sword) and Riptide (Percy's sword). It's a more unique and humorous pairing as fans might write about the two sentient weapons having conversations or competing with each other in some way.
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.
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.
I really like the idea of Percy and Magnus just chatting about their lives. Percy talking about his experiences with the Greek gods and Magnus sharing his Norse - related adventures. It would be a simple but really engaging interaction.
Definitely Annabeth from the Percy Jackson series. She can bring her strategic mind and knowledge of Greek mythology to the mix. And for the Magnus Chase side, Samirah. She has her own set of skills and beliefs from the Norse side that can add a lot of depth.
He might be amused. Percy has his own set of adventures, but reading about Magnus' would probably make him chuckle at the different takes on Norse mythology in the fanfiction.