Well, it depends on which comic universe you're referring to. In some indie comics or specific storylines, there might have been a character named Polly Cooper. But she might not be well-known across all comic genres.
Since we only know about him from the title 'Kevin Cooper NY Times Magazine Interactive Story', he could be many things. He might be an activist whose story the NY Times Magazine wants to share in an interactive way. Maybe he is a local hero who has made a significant impact on his community, and the magazine is using this interactive story to bring his story to a wider audience. Or perhaps he is a person who has been through a unique experience, like surviving a natural disaster or overcoming a great personal hardship, and the magazine is chronicling his story.
Hard to say for sure. Maybe it's a blend of real experiences and creative imagination. Sometimes stories like this take liberties to make them more engaging.