One of the most interesting secondary characters is Vinculus. He's a mad magician who has some prophetic abilities. He seems to know things about the future of magic and the fates of the main characters. His ragged appearance and his strange ramblings make him stand out. Another interesting character is Arabella Strange. She's Jonathan Strange's wife. She has to deal with her husband's increasing obsession with magic, and she has her own strength and independence. Her character shows the impact of magic on the non - magical people in the story.
Lady Pole is an interesting secondary character. After being brought back from the dead by magic, she has this strange existence between the living and the dead. Her experiences and her relationship with the main characters, especially how she copes with her new state, add depth to the story. Also, the Gentleman with the Thistledown Hair is fascinating. He's a fairy and his actions and motives are very different from the human characters. He brings an element of the otherworldly into the story and his interactions with the humans are full of mystery and danger.
Childermass is quite interesting. He's Mr Norrell's servant and he has a lot of knowledge about Norrell's secrets and the world of magic. His loyalty and his own hidden motives make him a complex character.
Mr Norrell is really interesting. He's this very reserved and traditional magician. He has a vast knowledge of old magic but is also very controlling when it comes to sharing that knowledge. His character is full of contradictions.
Magic and its place in society is a major theme. It shows how magic was once a powerful force in the past and how it can be reintroduced. Another theme is the relationship between the two main characters, Strange and Norrell, which is complex and full of rivalry and mutual influence.
One of the main themes is the nature of magic. It shows how magic can be both powerful and dangerous. Another theme is the relationship between the two main magicians, Jonathan Strange and Mr Norrell. Their different personalities and approaches to magic create a lot of tension and drama in the story.
Shino is often an interesting secondary character in Naruto fanfiction. His ability to control bugs gives a unique aspect to stories. Writers can explore his more introverted nature and how it affects his relationships with other characters. Another one is Rock Lee. His determination and unique fighting style can be the focus. In fanfiction, his story can be expanded on, like his training methods and how he overcomes his limitations.
Snape is an extremely interesting secondary character for fanfiction. His double - agent role and his complex feelings towards Lily Potter can be explored from different angles. There are fanfictions that focus on his early years at Hogwarts, his relationship with the Marauders, and how all of that shaped him into the man he became. Another character is Cho Chang. Her relationship with Harry can be re - examined and extended in fanfiction, and she can also be given more depth and backstory outside of just her romantic connection to Harry.
Max Caulfield is really interesting. She has the power of time manipulation, which makes her actions and decisions very unique. She's also a very relatable character as she struggles with the normal problems of a young adult along with her extraordinary power. Chloe Price is another interesting one. Her relationship with Max is complex and full of depth, and she often brings a sense of adventure and rebelliousness to the story.
Mairin can be really interesting. She has her own dreams and her relationship with Alain adds a lot to the story. She can be a source of motivation or a friendly rival for Alain.
Yui is quite an interesting secondary character. Her cheerful personality contrasts with Hachiman's cynicism and Yukino's coldness, and she often acts as a mediator between them.
It's hard to say without reading it thoroughly, but perhaps there could be a detective - like character who is trying to uncover the secrets of Izaya and Namie. This character would add an element of mystery and suspense.
One interesting secondary character could be Georgia's rival trainer. This character might have a very different approach to training Pokemon compared to Georgia. For example, they might focus more on the aesthetic beauty of their Pokemon's moves rather than pure power. Their interactions with Georgia could bring out different sides of her character.