The main characters would surely be Percy and Gaea. But don't forget about Grover. Grover could be the one who tries to bring Percy back to his senses if he's been somehow influenced. There could also be new characters created specifically for this fanfiction. For example, a seer who predicted this union and now has to help Percy either fulfill his role in the marriage in a positive way or break free from it.
Obviously, Percy and Gaea would be the main characters. But there could also be other characters like Annabeth. She might be heartbroken at first when she hears about Percy's marriage to Gaea. And then there could be some of the other demigods like Jason or Piper who would be involved in trying to understand what's going on and maybe even stop it if they think it's a bad thing.
Percy and Gaea are the central figures. However, characters such as Chiron could play a significant role. Chiron might be the voice of reason, trying to guide Percy or figure out a way to reverse the situation. Additionally, the gods themselves could be characters. Zeus might be angry at Percy for this union as it goes against the natural order of things, and his reaction could be an important part of the story.
Obviously, Percy will be the main character. He is the one doing the destroying after all.
Obviously, Percy is one of the main characters. And then there's the primordial that he marries. There could also be Percy's friends like Annabeth who might play important roles. They could be either supportive or skeptical of Percy's relationship with the primordial.
Obviously, Percy and Hera are the main characters. Percy, the demigod hero, and Hera, the queen of the gods.
One possible plot could be Percy having to overcome some sort of magical or divine interference. Maybe he has to prove his worth to Gaea in a series of trials. Another aspect could be how the other demigods react to this union. Some might be in shock, while others might try to stop it for the greater good.
The other girls who might be part of the main characters in this fanfiction could be Ukyo. She has her own feelings for Ranma and her unique personality and skills as a chef would add a lot to the story. Also, Shampoo would be a main character. Her Amazonian background and her tenacity in pursuing Ranma would make her an important part of the harem dynamic.
Well, Annabeth could be added. She would be really important as she is Percy's love interest. Her intelligence and strategic mind could play a big role in dealing with Gaea. Maybe she tries to find a way to break Gaea's hold on Percy if Gaea has some sort of power over him. Another character could be Nico di Angelo. His powers over the dead might be useful in uncovering secrets about Gaea's past and weaknesses. He could also be a voice of reason for Percy when Percy is in a difficult situation with Gaea.
Well, Percy is obviously one of the main characters since the title mentions him. Other likely characters could be the Olympian gods and goddesses. For example, Zeus, Poseidon, and Athena are important figures in Greek mythology and would probably play significant roles in a story set in the Olympian world.
Annabeth could be a crucial supporting character. She might use her wisdom to come up with a battle plan. For example, she could figure out the best time and place for Percy to attack Gaea based on her knowledge of ancient prophecies and Gaea's patterns.
Obviously, Percy would be one of the main characters. There would also likely be some of the well - known Roman demigods like Jason. Since Percy is joining the Romans, Jason could be a key figure in helping him integrate, or perhaps there could be some initial tension between them. Reyna might also be an important character as she is a leader in the Roman camp and would have a say in whether Percy can join or not.
Obviously, Percy and Poseidon will be main characters. Percy, as the son of Poseidon, is the one on the receiving end of the punishment. Poseidon, being the god of the sea, is the one dishing out the punishment. There might also be other characters like Annabeth, Percy's girlfriend. She could play a role in trying to help Percy understand why he is being punished and how to get out of the situation.