Lester "Worm" Murphy is a fictional character from the movie series Rounders, which focuses on the world of underground poker. He is portrayed as a skilled and street-smart poker player, known for his ability to read opponents and navigate high-stakes games. In the film, Worm is a close friend of the main character, Mike McDermott, played by Matt Damon. Their relationship is complex, as Worm often finds himself in trouble due to his reckless behavior and gambling habits, which creates tension between the two friends throughout the story.