Robin and David are the main characters. It's their story that the fanfiction is centered around. We can expect the plot to revolve around their experiences, emotions, and interactions.
In the '18 again robin and david fanfiction', it might focus on the personal growth of Robin and David. When they become 18 again, they are faced with a new beginning. They could face the same or different social situations as they did when they were actually 18. Their character development could be a central part of the story. Maybe Robin was shy at 18 in the original timeline, but this time she decides to be more outgoing. And David, who was perhaps too impulsive at 18, now tries to be more cautious. Their journey of self - discovery while being 18 again could make for an interesting fanfiction.
Obviously, the main character would be the one who would become Robin. But there could also be other important characters like his trainers or guardians. For example, an old martial arts master who taught him the ways of combat.
Robin is also an important member of the Straw Hat Pirates. She is an archaeologist with the ability to sprout body parts from any surface. She is very intelligent and her knowledge of history and ancient things often comes in handy during their adventures. In the fanfiction, she and Luffy are likely to have some special interactions and storylines.
Another character that might show up is Oracle. She could be the one providing information to the Titans about Robin's activities. Or she might be trying to figure out what's causing Robin's change from a distance. And sometimes, new original characters are introduced in the fanfiction. These could be other dark heroes or anti - heroes who either side with Robin in his darkness or try to oppose him, adding more layers to the story.
Robin and Artemis are the central figures. Robin is a key member of the team, always ready to analyze situations. Artemis is not only a great fighter but also has a complex personality. In the Darkness fanfiction, their relationship and how they interact with the elements of darkness are what drive the stories.
His friends like Batman and Nightwing could be main characters. Batman might use his detective skills to figure out what's wrong with Robin, and Nightwing could be there to offer emotional support.
The main character in 'the david story' is undoubtedly David. However, the story is populated with other important individuals. Bathsheba, the woman with whom David had an affair, is a significant character as this event had far - reaching consequences for David and his kingdom. Also, the prophets like Nathan who confronted David about his wrongdoings play important roles in the overall narrative of the 'David story'.
It could be Bella and Edward. Since they are the central characters in the Twilight series, it's very likely that in a fanfiction titled 'begin again', their relationship might be the focus. They could be starting their relationship over after some big event or change in the fan - created story.
The main characters are Mike and Maggie, as indicated in the title of the fanfiction.
The main characters are Maggie and Mark.