Fictional criminals are characters created in literature, film, and television who engage in illegal activities. These characters often serve as antagonists, driving the plot and creating conflict. Examples include Sherlock Holmes's nemesis Professor Moriarty and Hannibal Lecter from Thomas Harris' novels. These criminals can vary widely in motivation and complexity, from petty thieves to masterminds of elaborate schemes. They often reflect societal issues or moral dilemmas, allowing audiences to explore themes of justice, morality, and the human condition. Their stories can entertain, provoke thought, and sometimes even inspire real-life discussions about crime and punishment.