It could be just a random chant or repetition that someone has associated with the movie for no particular reason. Maybe it was part of a joke or a personal mnemonic device to remember something about 'Pulp Fiction'.
Since the details are scarce, Gary could be anyone. He might be an ordinary person living an extraordinary life as a gay man. Maybe he is a local figure in a community known for his contributions, or perhaps he is just a character in a story that is meant to represent certain aspects of the gay experience.
In the 'kid a gary carter story', Gary Carter might be a local figure. Maybe he was a shop owner who was always friendly to the kid. Or perhaps he was an old-timer in the neighborhood who had many interesting stories to tell, and the kid was always drawn to him, and that's how their story began.
Another theme is her relationships, be it with friends, foes or potential love interests. Fanfic writers often use these relationships to develop her character further. For example, in some fanfics, her relationship with a certain character might lead to her changing her views on things. And this makes for an interesting read as you see her character evolving through these interactions.
Well, Augustine himself is surely one of the main characters. He is the central figure around which the story revolves. There might also be his friends or colleagues who influenced his thinking or were part of his life journey. Maybe there are some religious figures like bishops or priests who interacted with him and played important roles in his spiritual development.
One of the main themes could be the exploration of faith. Augustine was a significant figure in Christian theology, and the graphic novel might delve into his spiritual journey, his thoughts on God, and the role of religion in his life. Another theme could be the historical context. It may show the time period in which Augustine lived, the social and political situations, which influenced his ideas and actions.
In my opinion, whether the St Augustine Fort ghost stories are real or not depends on what you believe. Some might dismiss them as just old tales, while others who have had personal encounters that they can't explain might be more inclined to think they're real. There could be natural explanations for some of the reported phenomena, like drafts of air being mistaken for a ghostly presence, but the allure of the stories remains.