Paul Madvig is a fictional character from the novel "The Glass Key," written by Dashiell Hammett. He is portrayed as a tough and resourceful political fixer in a corrupt city. Madvig is deeply involved in the criminal underworld, navigating complex relationships and power struggles. In the story, Madvig's loyalty is tested when he becomes entangled in a murder investigation. His character embodies themes of loyalty, betrayal, and the moral ambiguities of crime and politics. The novel is a classic example of the hardboiled detective genre, showcasing Hammett's skill in creating intricate plots and compelling characters.