Lou Bloom is a fictional character from the 2014 film Nightcrawler, portrayed by Jake Gyllenhaal. He is a driven and ambitious man who becomes a freelance crime journalist in Los Angeles. Lou is known for his ruthless determination to succeed, often crossing ethical boundaries to capture sensational footage of accidents and crimes. Throughout the film, Lou's character evolves as he navigates the competitive world of crime journalism. His obsession with success leads him to manipulate situations and people, showcasing the darker side of ambition and the media's influence on public perception.