I don't have enough information to specifically say who Roman Coleman is in this 'true story'. It could be an ordinary person with a unique experience, or perhaps someone who has made an impact in a particular field but is not widely known outside of the context of this story.
As I don't know the exact 'coleman love story', I can't say for sure who the main characters are. But it's likely there are at least two characters with some connection to the name Coleman.
Jessica Chambers was a victim in this story. She was a young woman who unfortunately became the center of a very tragic and mysterious case when she was found burned in a vehicle.
I'm not sure specifically which 'Coleman' refers to in terms of a distinct group of science fiction. But in general science fiction, there are many well - known authors like Isaac Asimov. His works often deal with complex robotic and future society concepts which could potentially be related to what might be in Coleman science fiction if there are similarities in themes.
Erin Trejo in Fantastic Fiction could potentially be an author. There are numerous authors in the world of Fantastic Fiction, each with their own unique styles and contributions. If Erin Trejo is an author, she might write stories filled with magic, adventure, or other elements typical of the genre. However, without further research, it's difficult to say more about her specific role in Fantastic Fiction.