Since I don't know the details of the 'poly star prince story', it's hard to say who the main characters are. But surely the prince is one of the main characters. There might be some other characters like his advisors, friends, or foes that are important to the story.
Given the name 'poly star prince story', the prince is likely a central character. There could be other characters depending on the nature of the story. If it's a story about his kingdom, there might be ministers, servants, and common people. If it's an adventure story, there could be companions he travels with, like a brave knight or a wise wizard, and of course, there might be villains who oppose him.
I'm not sure specifically as the name 'poly star prince story' is rather ambiguous. It could be about a prince in a world full of many stars, perhaps his adventures in a star - filled kingdom or his quest related to the stars. Without more context, it's hard to say for sure.
Leah Clearwater could also be a central character. She has her own complex story within the wolfpack. Maybe a visiting werewolf from another pack, who is more open - minded about poly relationships, could come into the story and start a relationship with Leah and some of the male pack members. Another option could be Seth Clearwater, as he is a likable character and could be part of a poly relationship dynamic within the pack.
In a btt x england poly fanfic, the main characters would start with BTT. If BTT is an organization, its leaders or most prominent members would be key. For example, if BTT is a team of superheroes, their lead hero would be important. England, whether it's a personified nation or a specific character representing England, would be a main character as well. There might also be some mythical or historical figures associated with England that could be brought into the story as main characters, and they would interact with BTT members in the context of this poly relationship.
One of the main characters is Claude C. Kenny. He is a bit of an outsider when he first arrives in the new world. He has to learn about the new environment and the different rules there. Rena Lanford is another main character. She serves as a guide in a way for Claude in the new world she calls home. There are also other characters that support them in their journey, like Ashton Anchors who is also an important part of their group. These characters each bring their own personalities, abilities and backstories to the overall narrative of Star Ocean Second Star Story.
The Trailblazer is a main character. They are at the center of the story's journey. March 7th is also very important. She's a lively character with a unique personality.
Luke Skywalker is a main character. He's a Jedi who plays a crucial role in fighting the Empire. Darth Vader, his father, is also important. He starts as a Sith but has a complex arc. Princess Leia is another key figure, a strong leader in the Rebel Alliance. And of course, there's Obi - Wan Kenobi, a wise Jedi who mentors Luke.
The sad prince is the central figure in the story. There could be other characters such as the poor citizens in his kingdom. They are important as they are the ones whose suffering the prince witnesses. Maybe there is also a messenger or a court jester who adds some color to the story and helps to show different aspects of the prince's character through their interactions.
Most likely, the prince is one of the main characters. There might also be a female lead, perhaps a commoner or a princess from another kingdom.
The Little Prince is the main character, of course. He is a small boy from a tiny planet.
The main character is Edward, the Black Prince himself. He was a central figure in the story due to his military exploits.