Maybe an old caretaker of the building where the mirror is located. He has seen a lot over the years and has some knowledge about the mirror's haunted past, so he plays an important role in the stories.
It's possible that there is a paranormal investigator in the stories. This person is experienced in dealing with haunted objects and is determined to figure out the secrets of the haunted looking - glass. He uses his skills and knowledge to try and communicate with the ghosts associated with the mirror.
There could be a young girl who discovers the haunted mirror. She might be the main character who tries to uncover the mystery behind the strange happenings.
One interesting story could be about a haunted mirror that shows a different era and the ghosts from that time. Maybe it's a Victorian - era mirror where a lady in a white dress appears, her figure is faint and she seems to be looking for something.
I'm not sure specifically without reading it more closely, but it could be a young girl as often in stories with looking glasses, young protagonists are common.
It's possible that there are ghostly figures that can be considered main characters in their own right. For instance, the spirit that haunts the dolls house. This ghost might have a backstory that is slowly revealed throughout the story. There could also be a psychic or medium type character who is able to communicate with the ghosts and helps to uncover the secrets of the haunted places in the book.
I'm not entirely sure, but there might be a brave hero and a powerful villain.
There are several main characters in 'through the looking glass full story'. Alice is the protagonist who embarks on this journey through the looking - glass. The Red Queen, a rather imposing and often intimidating figure, plays a significant role in Alice's adventures. Tweedledum and Tweedledee are two characters that add a lot of humor and philosophical banter to the story. They engage with Alice in a way that both confuses and enlightens her. Additionally, there are the chess pieces which are also important in the story as Alice has to interact with them as part of her journey through this topsy - turvy world.
In a novel with such a title, there might be a main character who is on a quest of some sort. This character could be a young person, full of wonder and naivete at the start. There might also be a guide or a mentor figure that they meet in the world behind the looking glass. However, without more details about the 'through a looking glass darkly novel', this is just a general idea.
Alice is the main character. Then there are the Red Queen and White Queen who play important roles in the story.
There's also Chaol Westfall, a captain in the king's guard. His relationship with Celaena is an important part of the stories.
The main characters are the haunted man and the ghost. The man is likely dealing with his own problems, like guilt or regret. The ghost, on the other hand, is the one who approaches the man with the idea of a bargain. Their interactions drive the whole story forward.
Alice is of course the most important character. She is the one who goes through the looking glass and has all the adventures. The Red Queen is also very important. She is often in opposition to Alice and represents a kind of authority in the strange world.