Dewey Riley is a fictional character from the popular horror film franchise, Scream. He is portrayed as a dedicated and somewhat clumsy police officer who often finds himself in the midst of the chaos caused by the Ghostface killer. Dewey is known for his loyalty to his friends and his determination to solve the murders that plague the town of Woodsboro. Throughout the series, Dewey evolves from a rookie cop to a more experienced investigator, often providing comic relief amidst the tension. His character is played by actor David Arquette, who brings a mix of humor and vulnerability to the role, making Dewey a memorable part of the Scream saga.