Question, are OCs fine to use?

For Jack's Blacks, feel free to provide whatever character details you like, but I reserve the right to change names or character details to keep the story general-interest. My goal with these stories is to make them appeal to a broad audience (well, at least the demographic that enjoys whatever kink is being portrayed), so I don't want to make the character so specific that readers have trouble inserting themselves or their OCs into the story.