Serafina Pekkala could be an interesting character to focus on in a 'a subtle knife fanfic'. As a witch, she has her own set of powers and a unique perspective on the events. You could write about how she views the Subtle Knife and its implications for the different worlds. Also, Iorek Byrnison, the armored bear. His strength and loyalty could be a great addition to a fanfic. He could be involved in protecting the knife or helping the characters who possess it in their quests.
I'm not sure specifically. But it could be a young hero or heroine.
One of the main characters is Will Parry. He is a young boy who comes into possession of the Subtle Knife and plays a crucial role in the story. Another important character is Lyra Belacqua, who is also involved in the adventures across different worlds in the graphic novel.
A plot idea could involve a character who is not the main protagonist in the original story getting hold of the Subtle Knife. This character could be an antagonist or a side - character with their own motives for using the knife. For example, they might try to use it to gain power over the different worlds that the knife can cut through. Or perhaps a story where the Subtle Knife is broken and the characters have to find a way to repair it, which leads them on a whole new adventure full of challenges and new characters.
Common themes in 'A Subtle Knife' fanfics can vary. Some might explore the moral ambiguity of using powerful weapons, while others might delve into the characters' inner struggles and growth. Another popular theme could be the exploration of unknown worlds and the challenges they present.
Heathcliff is an obvious choice. His complex personality, filled with love, hatred, and a thirst for revenge, offers a lot of material for a fanfic writer. You can explore his past more deeply or give him a different future.
Todd Hewitt is an obvious choice. He's the main character in the original story, so there's a lot of room to expand on his character, his relationships, and his journey. Viola Eade is also great. You could explore her experiences more deeply, especially her interactions with Todd and how she adapts to the new world she finds herself in. Another good character is Mayor Prentiss. He has a complex personality, and writing about his backstory or what could have happened to him after the events of the original story can be really interesting.
Another interesting concept would be to set the story in a post - apocalyptic world where the Subtle Knife is the only hope for restoring order. The characters would have to face new challenges and make tough decisions about who should wield the knife and for what purposes.
The Suriel is a character that has a lot of potential in a fanfic. It has a strange and somewhat otherworldly presence. You could write about its role in the world from a different perspective. Maybe it has more knowledge than it initially lets on and could be a key player in a different kind of story. And Lucien, with his torn loyalties and own journey of self - discovery, is also a good character to center a fanfic around.
The family members of the main characters can be a great focus too. Their reactions to the events in the fanfic, their influence on the main character's decisions, and how their relationships change over the course of the story can be really engaging to write about.
Well, from what I know, it could be about a journey where the subtle knife plays a crucial role. It might have elements of mystery and danger as the characters navigate through different worlds or situations with the help or hindrance of the knife.