The main characters would surely include the Lady of the Lake herself. And in an Arthurian context, King Arthur is likely to be a main character as his story is closely tied to the lady. Merlin, the great wizard, may also be a main character as he has connections with both Arthur and the Lady of the Lake.
The Lady of the Lake is the most prominent character in the novel. King Arthur is a key character as the lady has a significant impact on his life, from providing the sword to having an influence on his reign. Sir Gawain might also be among the main characters. His adventures and his code of chivalry could be affected by the actions of the Lady of the Lake. Moreover, Morgan le Fay, with her own powers and motives, could be part of the main cast as she may interact with the Lady of the Lake and be involved in the power plays within the Arthurian story.
Well, often in such mystery novels, there's a central investigator figure. This could be a private detective or a police officer. Then there are likely to be characters related to the lady in the lake. It could be her friends, enemies, or family. There may also be some witnesses or locals who play important roles. They might provide key information or mislead the investigation, adding to the complexity of the story.
The main characters could include the Lady of the Lake, who is often a central figure with her own motives and powers. There may be characters from the surrounding area, like a local fisherman who has seen strange things around the lake. And of course, there could be a hero figure. This hero could be on a journey and stumbles upon the mystery of the Lady of the Lake. He might be trying to solve a problem in his kingdom or for his people and believes the lady has the answers.
Obviously, the Lady of the Lake is one of the main characters. King Arthur might also be a major character as his relationship with the Lady of the Lake, especially regarding Excalibur, is a significant part of the Arthurian legend. Merlin could be in it too as he is often intertwined with the events and characters in this mythology.
The lady in the lake is of course a crucial character. Then, there could be a journalist character who is trying to uncover the truth about the lady. This journalist might interview people and dig deeper into the mystery. There might also be a character who is a bit of an outcast in the community but has some secret knowledge about the lady in the lake.
Obviously, Shirou and the Lady of the Lake are the main characters.
Ron could be another main character. He might be hesitant or skeptical about the Lady of the Lake at first. And of course, there could be new characters created specifically for the fanfiction. Maybe a young wizard or witch who has a special bond with the Lady of the Lake from the start and guides the others in understanding her role.
Well, in 'the lady in the lake novel', the main plot could be centered on a detective or some characters trying to solve the mystery. They might start with the discovery of the lady in the lake. Then they have to piece together her past, talk to people who knew her or might be related to her situation. There could be secrets, lies, and a whole web of relationships that need to be untangled to fully understand why she is in the lake.
One of the main themes could be mystery. The lady in the lake is often a mysterious figure, and the events surrounding her discovery or her existence in the novel likely create an air of mystery. Another theme might be isolation. If the lady is in the lake, she could be seen as isolated from the rest of the world. Also, the theme of death could be present, as the lake can be a symbol of the end or a place of final rest.
There could be a young and curious protagonist. They might be new to the area or just visiting the lake house for the first time. And perhaps there is a mysterious neighbor who adds an element of intrigue to the story. This neighbor could have some secrets related to the lake house that slowly unfold as the story progresses. There might also be family members of the main character, like a parent or a sibling, who play important roles in the character's relationship with the lake house.
I don't know the novel well, so I can't say for sure. But it could have a brave explorer as a main character who is drawn to the dark lake to find out its secrets.