A character like Robin Hood. He could be a great addition as he has his own set of skills like archery and thievery. He could team up with Percy in the Land of Stories, and they could steal back some important item from an evil villain, all while having some great banter and adventures together.
A plot could involve a character from the Land of Stories coming to the Percy Jackson world. For example, Goldilocks could come and try to steal some of the powerful artifacts in the demigod world. Percy and his friends would then have to stop her while also dealing with the chaos she causes in their world.
Another interesting pairing could be Annabeth and Tony Stark. Annabeth is super smart and strategic, and Tony is a genius inventor. They could bounce ideas off each other, with Annabeth providing ancient wisdom and knowledge of architecture and strategy, while Tony comes up with high - tech solutions. They might start off bickering as they both have strong personalities, but eventually become a great team.
Definitely Loki. In a 'Percy Jackson and Avengers crossover fanfiction', Loki would find Percy's world of Greek gods and demigods fascinating. He could try to use Percy's knowledge of the gods to his own advantage, or maybe even form an unlikely alliance with Percy. Loki's mischievous nature would add a whole new layer of chaos and intrigue to the crossover.
Definitely Thor and Percy. Thor has his powerful hammer and lightning powers, while Percy can control water. They could have an epic battle against a fire - based enemy, with Thor's lightning and Percy's water creating steam and all kinds of cool battle effects.
Percy himself would be really interesting. His carefree yet heroic nature in the world of Twilight would be a contrast. He'd be the one bringing his demigod powers and his sense of humor. Just think of him trying to make friends with the vampires and werewolves while still being true to his demigod self.
I think Mal from Descendants would be really interesting. If you combine her with the Percy Jackson universe, her skills in magic and her somewhat villainous past could create a lot of drama. She could be a bit of an outcast among the demigods at first because of her heritage, but then prove herself as a valuable ally. For example, she could use her magic to help the demigods in a battle against a new type of monster that is resistant to normal demigod powers.
I think Percy Jackson himself would be really interesting. He has such a strong personality and his powers are unique. In a fanfiction with Descendants, he could bring his demigod skills and his sense of adventure. He might be a bit of a fish out of water in the Descendants' world, which could lead to some really funny and exciting situations. His loyalty and determination would also make him a great character to drive the story forward.
I think Percy would be the most interesting. His laid - back yet brave personality would contrast with the more serious Kanes, creating some really fun dynamics.
Another great pairing could be Jacob and Grover. Jacob is a werewolf with a strong sense of loyalty and Grover is a satyr, always looking out for demigods. They both have a connection to nature in different ways. Jacob with his wolf form and Grover with his love for the wild. They could have some really fun adventures together as they explore both the Twilight and Percy Jackson worlds.
I think Percy Jackson and Thor would make an interesting pairing. Percy has his connection to water and the sea, while Thor is associated with lightning and thunder. They both have a sense of heroism and loyalty. Percy could learn about different forms of power from Thor, and Thor could be intrigued by Percy's ability to control water in such a unique way. They might also have some friendly competitions, like who can control their element better in a given situation.