As I don't know the story, it could be the parents in the family next door, their children, or maybe even the family pet.
Without reading the 'the family next door story', it's difficult to determine the main characters. It could be an elderly couple who live next door and are known for their gardening skills, or a young family with a new baby that the whole neighborhood is interested in. There might also be a character like a nosy neighbor who is constantly observing the family next door, and in that case, this nosy neighbor could also be considered one of the main characters in a sense.
I don't know as I haven't read it. Maybe it's the parents and children in the family next door.
Obviously, the boy next door is one of the main characters. There might also be the narrator, who could be a neighbor or someone who has a close relationship with the boy next door.
Since I don't know the specific story, it could be the star, who is likely a central character. And probably the neighbor who discovers or has a relationship with the star.
I don't know as the information given is too limited. But it's likely that the girl next door is a main character, and perhaps there are also her family members, friends, or neighbors.
There could be a neighbor as another main character. Maybe an older person who gives the girl advice, or a peer who becomes her friend or rival. For example, if it's a story about the girl's musical journey, the neighbor could be a retired musician who mentors her.
I'm not sure as not much is given. But probably the main character is the 'devil' neighbor and perhaps some of the neighbors who were affected by this person.
There are two main characters in 'the shrink next door true story'. One is the shrink, Isaac Herschkopf, who is the central figure in this unethical scenario. The other is Marty Markowitz, the patient who becomes the victim of the shrink's inappropriate behavior.
Not having read the story, we can only guess. The little wife is surely a key character. There could be a neighbor who is either friendly and helps her out or is jealous of her. There might be a local shopkeeper who she interacts with regularly and through whom we learn more about the neighborhood and her place in it. And if there's a mystery or a secret in the story, there could be a character who holds the key to that mystery, like an old acquaintance from her past who shows up unexpectedly.
Since I don't have detailed knowledge, the main characters are presumably the girls that the story focuses on. They could be young women who found themselves in a unique set of circumstances. These girls might have different personalities and backgrounds that are explored throughout the true story.
The main characters are the psychiatrist and his patient. But I'm not sure of their exact names right now.