Maybe the OC is an artist who uses their work to spread awareness about social issues. Huey is initially skeptical but then realizes the power of art in activism. Their relationship develops as Huey helps the OC make their art more impactful and the OC helps Huey see different perspectives on how to reach people. They then start a relationship based on mutual respect and shared goals.
Think about their goals and dreams. A believable character in this fanfiction should have their own agenda. It could be something like the OC wants to start a community center. This would give them a reason to interact with Huey. Also, give them flaws. No one is perfect. Maybe the OC is a bit too impulsive and sometimes jumps into things without thinking, which can cause problems in their relationship with Huey but also makes them more human.
Charlie Freeman is the central character in the novel. But without reading it, we can't say much more about his specific traits. He could be an ordinary person with an extraordinary story or someone with unique qualities.
Morgan Freeman has a very distinct career, but he was not part of the cast of Pulp Fiction. Pulp Fiction had a different set of actors such as Samuel L. Jackson, Uma Thurman, etc. Freeman has been in many great movies, but this isn't one of them.
I'm not sure who the author of Freeman Novel is. There could be many relatively unknown novels with this name, or it could be a self - published work where the author isn't widely known yet.
To develop both characters, you can put them in situations that force them to rely on each other. For instance, if they get lost in a strange part of town. Huey would use his street smarts and Jazmine her charm to get help. Through this, they would see new sides of each other. Huey might see Jazmine's determination and Jazmine might see Huey's protective side. This would deepen their relationship and also develop their individual characters.
Their relationship would likely become more serious. They would have to rely on each other more, especially as they prepare for the baby. There would be a new level of intimacy as they share the experience of pregnancy.
Since there are not many novels directly about Huey Long, it's hard to define common characteristics. But if there were, they might likely include elements of the political drama and power struggles of his era. Maybe also the social and economic context of Louisiana at that time, like the poverty and the attempts at reform.