The harem might include a mysterious witch who is initially an enemy but then falls for the knight's charm. Also, a female warrior who has her own reasons for following the knight. She could be seeking revenge against a common foe, and the knight's harem provides her with the resources and support she needs. And of course, there could be a young maiden who is simply in love with the knight's noble deeds.
The main characters could be the women in his harem. There could be a strong - willed princess who joins his harem after he saves her from a political intrigue. Another could be a peasant girl with a kind heart and great cooking skills.
Well, perhaps the sexy knight starts with just one or two companions in his 'harem'. As he travels across the land, his charm and heroic deeds attract more. His harem could be a diverse group, each with their own skills. Some might be great archers, others skilled in magic. And the story could revolve around how he manages all these relationships while still being a noble knight.
There could be a human girl who is not part of the main story but has some sort of special ability that Hanabusa is drawn to. Maybe she can see the future or has a unique form of psychic power. Their relationship would be complex as he is a vampire and she is a human, and they would have to deal with the differences in their natures.
The knight would obviously be one of the main characters. He could be a new character created specifically for the fanfic, or perhaps a reimagined version of an existing RWBY character with knight - like qualities. The maidens would also be main characters. They could be based on the RWBY girls, or entirely new characters with unique abilities and personalities.
The main characters are the king and his knight. The king could be a complex character, with his own backstory, motives, and insecurities. The knight, on the other hand, may have a reputation to uphold, a code of honor to follow. There might be other characters like the queen, who could add more drama to the story, or a jester who provides some comic relief, but the king and his knight are bound to be at the heart of the narrative.
The knight himself would obviously be a main character. He could be an experienced warrior with a mysterious past. There could also be a wizard who has some connection to the knight's 100 - year journey, either as a helper or as someone who initially set the knight on this path.
Since I don't know the exact 'knight games story', it could be the knights themselves, like Sir William, a brave and experienced knight. There might also be a young squire who dreams of becoming a knight and follows the main knight throughout the story.
In the 'love knight story', the knight is surely one of the main characters. He would be the protagonist, driving the story forward with his actions in the name of love. His love interest, let's say a fair lady, would also be a main character. She might be the one the knight is trying to protect or win over. Additionally, there could be a mentor figure, an older knight or a wise wizard, who gives advice to the main knight on his journey of love. This character could help the knight navigate through the difficulties and challenges that come his way in the pursuit of love.
In the Dark Knight Story, the most prominent characters are Batman, who is the Dark Knight and protector of Gotham. Then there's the Joker, a deranged and extremely intelligent criminal. Also, Commissioner Gordon plays an important role. He is one of the few in the police force who trusts Batman and often works with him to keep the city safe. These characters drive the story forward with their interactions and their different goals. Batman wants to bring justice, the Joker wants to create anarchy, and Gordon wants to uphold the law in a city filled with corruption and crime.
Since I don't know the exact 'Sad Knight Story', it could have the sad knight as the main character of course. There might also be a damsel in distress he is trying to save or a villain who caused his sadness.
In the Dark Knight story, the most prominent characters are Batman, who is the Dark Knight trying to protect Gotham. Then there's the Joker, a chaotic and evil villain who loves to create mayhem. Also, Harvey Dent is an important character. He starts as a district attorney with good intentions, but later gets corrupted by the Joker's actions.