Percy is a must - have, of course. But I think Tyson could be really interesting. His strength and his unique appearance would make for some funny and exciting moments during the drive. And Nico di Angelo could also be a great addition. His powers over the dead could create some spooky yet cool scenarios, like when they pass through an old cemetery during the drive and he has to deal with restless spirits.
Percy, Annabeth, and Grover are the obvious choices as they are the main characters in the Percy Jackson series. However, including Clarisse would also spice things up. Her tough - as - nails attitude and combat skills could add some action - packed moments, especially if they get into a fight with some monsters during the drive. And don't forget Leo. His mechanical skills might be useful if the vehicle they are in breaks down or needs some modifications during the journey.
Paul Blofis should be in it. Since he's Sally's husband, his presence would add an interesting layer to the family dynamic in the fanfic. He could be involved in some humorous situations when it comes to understanding Percy's demigod world.
I think Tyson, Percy's cyclops half - brother, would be a good character. His strength and loyalty would be assets in any situation. Also, Nico di Angelo could be in the fanfic. His control over the dead could provide an interesting dynamic, especially if they are exploring some dark or ancient places related to Hephaestus' past works. And of course, Clarisse La Rue. Her combat skills and fierce personality would add some drama and action to the story.
One idea could be that Percy and his friends go on a fun drive in a magical vehicle that can travel through different realms. Maybe they encounter some mythical creatures along the way and have to use their powers to get out of tricky situations.
Well, obviously Percy and Phoebe are the main ones. But other great characters to include could be Annabeth. She could be jealous of Phoebe at first, creating some interesting drama. Grover would also be a good addition. His ability to sense danger and his friendship with Percy could play an important role in the story.
Well, obviously her father Percy Jackson should be included. His experience and wisdom could be a great help to his daughter. Annabeth Chase could also be a great addition. She could be like a mentor to the daughter, teaching her things about strategy and knowledge.
Definitely Chaos. As the origin of all things, it would add a whole new level of mystery and power to the story. Also, Nyx, the goddess of the night, could be really interesting. Her dark and powerful nature would contrast well with Percy's more heroic and light - hearted side.
Sally Jackson, Percy's mother, is also an important character. Her love for Percy and her strength can be a central part of the story. She could be the one who gives Percy the emotional support he needs when he's confused or scared about the strange things happening around him. In a fanfiction, she could also have some secrets of her own related to the mythological world that Percy discovers as he grows up.
Obviously, Grover has to be there. He's Percy's best friend. He could be the one who gives a really heartfelt speech at the wedding. Also, Chiron would be great. He could offer some wise words to the newlyweds. And Tyson, Percy's half - brother, would add a fun element with his big, kind heart.
Nico di Angelo would also be an interesting character to bring in. His dark past and his connection to the underworld could provide a contrast to the more positive and light - hearted relationship between Percy and Rachel. He might have his own motives that either help or hinder Percy and Rachel's mission.
Mentor - like characters can also be great in a Percy Piper fanfic. They can guide Percy, pass on wisdom, and help him grow as a character. Maybe an old wizard who has been around for ages and has a lot of knowledge about the magical world.