It's not appropriate at all. Fanfiction is a form of creative writing that should be accessible to a wide audience, including younger readers. Such sexual content not only goes against the spirit of the original work but also can create an uncomfortable and inappropriate environment in the fan community.
Percy could be a brave and adventurous character, perhaps with some special abilities like being able to control water or having enhanced strength. Zoe might be a smart and resourceful female character, maybe with skills in tracking or archery. They could be from a fictional world full of magic and mythical creatures.
You could write about Percy and Zoe going on an epic adventure together. Maybe they are on a quest to save a magical land or solve a mysterious riddle. This would focus on their friendship and teamwork.
No, it's not appropriate. Writing sexual fanfics about characters is unethical and often violates the terms of use of many platforms. It also objectifies the characters and can make other fans uncomfortable.
They could interact in a very competitive way too. Maybe they compete in different tasks or challenges within the story. For instance, if there's a race to find a magical item, they both want to be the one to succeed first, but still have a deep underlying sibling bond. Percy might tease Zoe sometimes in a brotherly way, and Zoe would roll her eyes at his antics but secretly be fond of him. Their interactions would be a mix of typical sibling banter and deep emotional support for each other.
Yes, there might be such fanfictions out there. You can try searching on popular fanfiction websites like Archive of Our Own or FanFiction.net. However, the idea of Zoe cheating on Percy might be a bit unorthodox as their relationship in the original context might not typically lead to such a plot.
You could write about their friendship. For example, they could go on an adventure together, facing challenges and growing closer as friends. They might learn from each other's strengths and weaknesses.
Well, at first, they could be at odds with each other. Zoe might see Percy as too impulsive, while Percy might think Zoe is too reserved. But as they get to know each other better, they find common ground. For instance, they both care deeply about their friends and their world. This understanding could lead to Percy falling in love with Zoe. He might start to do little things for her, like bringing her a flower he found during their travels or protecting her in battles without her asking.
Adventure is also a big theme. They are often put in situations where they have to go on quests or face challenges together, like in many of the fanfictions where they are in a magical realm and have to defeat some sort of evil. This allows for a lot of action and development of their relationship.
Well, if Percy is the father of Zoe in fanfiction, it might mean that there are some hidden powers or abilities that Zoe could inherit from Percy. This could be a major plot point. Also, their relationship could be full of emotional turmoil. Percy, being the protective father, would have to deal with all the dangerous situations that Zoe gets into, just like he does with his other friends in the original stories.