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.
I'm not sure who specifically 'Ruiz Burgos' is in relation to 'Pulp Fiction'. It could be a minor character, or perhaps someone associated with the production in a less - known capacity.
Well, Coleman science fiction might often feature advanced technological concepts. It could have unique alien species with their own cultures. For example, the stories might explore the implications of time travel or faster - than - light travel.
I'm not sure specifically as I haven't read it. It could be about a place called Coleman Hill and the events, characters, and stories that unfold there.
To know if 'ruiz' is a main character in the Black Album novel, one would need to read the novel carefully. Just from the name alone, we can't make a definite conclusion. If the story revolves around 'ruiz' and his actions, decisions, and development are central to the plot, then he is a main character. But if he is only mentioned in passing or has a peripheral role, then he is not a main character.
I'm not entirely sure who 'ruiz' is in the Black Album novel without more context. It could be a character, but it might also be a reference that is specific to certain themes or sub - plots within the novel.