Perhaps it includes the people who were involved in creating or promoting the Green Book. Maybe there are also some characters who were at the places listed in the Green Book, like the owners of the safe hotels or restaurants for African - American travelers.
Often, the main characters would be African - Americans who were using the Green Book. For example, travelers who were on the road and had to rely on the information in the Green Book to find accommodation and services.
The main characters are a black pianist and his white driver.
The main characters are Don Shirley, a black pianist, and Tony Lip, his Italian - American driver.
The main characters are a black pianist and his white driver. Their relationship forms the core of the story as they travel together and face various situations.
As we don't have details about this 'green book story', the main characters could be diverse. Maybe it's a story with a hero who is on a quest related to the green book. There could also be an antagonist who wants to steal or destroy the green book. Or perhaps it's a story about a family, and one of the family members discovers the green book and they all get involved in the events that follow.
If it's a fictional story about a magical green book, the main character might be a curious child or a brave adventurer. They are the ones who discover the green book and start to explore its secrets. There could also be secondary characters like an old wise man who gives some advice about the book, or a villain who wants to steal the book for his own evil purposes.
The main characters are a black pianist and his white driver.
I'm not sure exactly who the main characters are without more information about this specific 'Green Book: The Real Story'. But it could be the people who wrote the Green Book, or perhaps some of the travelers who relied on it.
Since I don't know the specific story, I can't say for sure who the main characters are. It could be a person named in the title, or it could be a group of people related to the green ribbon in some way.
Since I don't know the exact 'Green Fingers True Story', I can't say for sure. But it could be about an ordinary person who becomes a gardener, so that person would be the main character.