You might want to check out 'The Deceptive Mask'. In this novel, multiple characters lie about who they are for different reasons, like seeking revenge or escaping a troubled past. These lies drive the story forward and keep the readers on the edge of their seats.
One such novel could be 'The Great Gatsby' where Jay Gatsby creates a false identity to fit into high society.
Typically in 'the little lie story', there would be the liar, who could be a child or an adult. There might also be a person close to the liar, such as a parent or a sibling. For example, if it's a story about a child lying to their parents about where they were after school, the child is the main liar and the parents are the ones affected by the lie.
There could be a character who is a master of deception, always creating these beautiful lies. And there might be another character who is very naive and easily believes those lies. Their interactions would drive the story forward.
In the 'lie with me novel', there could be a young woman as one of the main characters. She might be a complex character, perhaps with a troubled past that makes her prone to lying. And then there could be a male character who gets involved with her, either romantically or in some other significant way. Their interactions could be the focus of the story, with other secondary characters adding more depth and context to the plot.
Since I'm not familiar with this specific novel, it's difficult to name the main characters. However, it's likely to have a central character who has the ability to listen for lies. There could also be a supporting character who helps this main character in their journey, perhaps a friend or a mentor. And of course, there would probably be antagonists who are trying to deceive the main character and avoid having their lies exposed.
I'm not sure specifically who the main characters are in 'the good lie story' without more context. But generally, in a story about a good lie, you might expect to find a character who tells the lie, perhaps a protagonist who is trying to protect someone or achieve a noble goal. There could also be a character who is the recipient of the lie, someone who is being shielded from a difficult truth.
I don't know as I haven't read it. It could be a variety of characters like a young hero trying to do the right thing, or an older mentor figure who guides others in their decision to tell good lies.
I'm not sure specifically as it depends on the particular fanfiction. But it could be a couple, like a male and a female lead who are in a complex relationship where love and lies are intertwined.
Xander is a great character to feature. He's always full of energy and getting into fun adventures, which can make for an exciting story. Also, Emma, as she's often the voice of reason among the campers and can bring a sense of stability to the plot. And Lou, the counselor, is another good choice as she has to deal with all the camper's antics.
Oliver Queen is an obvious choice. He has such a complex backstory with his time on the island, his return to Starling City, and his evolution into the Green Arrow. His relationships with other characters like Diggle, Felicity, and Laurel also offer a lot of material for a fanfic.