Marvin Boggs is a fictional character from the movie series Red, which stands for "Retired Extremely Dangerous." He is portrayed by actor John Malkovich and is known for his eccentric behavior and paranoid personality. Marvin is a former CIA agent who often provides comic relief with his wild theories and unpredictable actions. In the films, Marvin is part of a team of retired operatives who come together to confront threats from their past. His character adds a unique dynamic to the group, showcasing a blend of humor and unpredictability that keeps audiences entertained throughout the story.