In my opinion, Neville Longbottom could be an interesting character to pair with Percy and Harry. Neville has his own journey of growth in the Harry Potter series, and his courage could be a great addition. He could learn from Percy and Harry, and they could also learn from him. From the Percy Jackson world, Grover could be paired with them. Grover's connection to nature and his ability to sense danger could be very useful in their adventures together. Also, Luna Lovegood. Her unique perspective on the world could add a different dimension to their group dynamic.
Hermione and Annabeth would be an amazing pair. Both are extremely intelligent and resourceful. They could share their knowledge, Hermione with her vast academic knowledge from the wizarding world and Annabeth with her understanding of Greek mythology and architecture. They could work together to solve puzzles and overcome obstacles that require both magical and non - magical knowledge.
Annabeth could be a great addition. Her intelligence and strategic thinking would complement Percy and Calypso's skills. She could help them solve complex puzzles or plan their next moves during a quest.
Ron could also be a good pairing. Ron's sense of humor and loyalty would add a lot to the story. He might be the one to cheer Harry on during intense gaming sessions and also provide some comic relief when things get too serious in the gaming world. Plus, his own magical abilities could complement Harry's in unexpected ways within the context of the games.
Hermione could be a great addition. She could use her intelligence to help Harry and Daenerys strategize. For example, in battles or in political negotiations in Daenerys' world. Another good character could be Tyrion. His cunning and knowledge of politics could be very useful. He could offer different perspectives to Harry and Daenerys, and his sense of humor could lighten up tense situations.
Annabeth Chase would be a great character to pair with them. She's smart and resourceful, and her relationship with Percy adds an interesting dynamic. Piper McLean could also be good as she has her own set of skills and her connection with Jason. Another option could be Nico di Angelo. His dark powers and brooding nature would contrast well with Percy and Jason's more heroic and outgoing personalities.
Uma would be a great character to pair with Harry Hook. They have a history together from the Isle of the Lost and their pirate ways. Also, Mal could be an interesting pairing as they are sort of opposites, with Mal being more into magic and Harry being a pirate. Another good one would be Ben, the king of Auradon. Their interactions could be really fun as they come from such different worlds.
Lestrange and Remus Lupin could also make an interesting pair. Lupin's calm and empathetic nature could contrast with Lestrange's volatile and dark personality. A fanfiction could explore how Lupin might try to understand what led her to the dark side and if he could possibly bring out any good in her.
Luna Lovegood could also be an interesting addition. Her unique perspective on magic and the wizarding world might bring new ideas to the group. For instance, she could have insights about some of the more mysterious magical creatures or phenomena that they come across, which could be crucial in their quests or battles.
I think Tyson would be an excellent character to include. He's Percy's half - brother and his strength as a Cyclops could be very useful in various situations. His innocence and loyalty also make him a lovable character. Additionally, Clarisse could be paired with them. She has a tough exterior but deep down she's a strong and capable demigod. Her rivalry - turned - friendship with Percy could add some spice to the fanfiction. And of course, Chiron, the centaur, could be involved. His wisdom and guidance are always valuable and could play a crucial role in their adventures.
Dumbledore and Lady Hela would be an interesting combination. Dumbledore's wisdom and Hela's power could lead to some intense and thought - provoking interactions. They could be on opposing sides at first, but then find common ground in their goals for the wizarding world.