Well, of course, Jane Rizzoli, who is known for her street - smart and no - nonsense approach to solving crimes. And Maura Isles, who brings her scientific knowledge and a more refined sensibility to their partnership. In fanfiction, their individual personalities are explored further, and their relationship can be developed in different and interesting ways. For example, we might see more of Jane's family life affecting their work relationship, or Maura's personal interests influencing the cases they take on.
Jane Rizzoli and Maura Isles are the main characters. Jane has her own set of skills from her years on the police force, like her ability to read people and her combat skills. Maura, on the other hand, has her expertise in forensic pathology. In the fanfiction, their characters can be tweaked a bit. Maybe Jane becomes more open - minded about some of Maura's unorthodox ideas, or Maura becomes more street - smart under Jane's influence. Their interactions, whether it's arguing over a case or having a heart - to - heart, are what make the fanfiction interesting.