Well, it could be that Percy leaves camp and discovers a new power within himself while on his journey. He then uses this power in a very public way, like in a big sports event where he showcases superhuman abilities that no one has ever seen before. This could lead to him becoming famous as people are always fascinated by the extraordinary.
Maybe Percy leaves the camp and stumbles upon a long - lost artifact. He manages to return it to its rightful place or use it to solve a global problem. His story gets spread around the world through the media, making him a well - known figure. He could also meet new friends outside the camp who help him in his adventures and further boost his fame.
He might go on a solo adventure to discover more about his powers. He could encounter new mythical creatures that he hadn't seen around the camp. Maybe he'll meet some other demigods who are on the run or have their own secret quests.
Obviously, Percy himself is the main character. There could also be his friends from the camp who might play a role in his journey outside the camp, either helping him or trying to bring him back. Maybe some new characters that he meets on his path to fame, like a mentor figure who guides him in the new world he enters.
In this fanfiction, Percy might use his powers and leadership skills to bring order to the camp. Maybe he reorganizes the training schedules, making them more efficient for the demigods to improve their skills.
Maybe Percy leaves camp to protect his loved ones. He meets someone special during his journey and they have a daughter. He then has to raise her while also dealing with the threats from his past life at the camp.
He might gain the power to control elements like fire, water, air and earth. For example, he could use fire to defend against enemies or water to heal wounds. It would make him extremely powerful and change the whole dynamic of the story.
Well, he could bring his unique water - controlling abilities to the Avengers. Maybe he'd be the one to put out the fires during big battles in the city. He might also form an interesting friendship with Thor, since they both have some connection to powerful elements.
In this fanfiction, Percy might face a lot of challenges on his way to becoming king. He could have to prove himself to the people, deal with political intrigue, and perhaps even face some old enemies who don't want him in power.
Well, in this fanfiction, Percy might meet some new characters early at the camp. Maybe he discovers a hidden part of the camp that others don't know about yet.
Perhaps they were caught in a compromising position while having a private moment. This could lead to all sorts of awkwardness among their friends at the camp. They might have to face some teasing or even get in a bit of trouble with the camp counselors for not following the rules.
One possibility could be that Percy leaves camp to go on a solo quest to find a long - lost magical artifact that he believes can save the camp from an upcoming threat. He might face many challenges on his own, like battling new monsters and making difficult decisions without the support of his friends at camp.