M is a fictional character in the James Bond series, created by author Ian Fleming. M serves as the head of the MI6, the British Secret Intelligence Service, and is responsible for overseeing the operations of agents like James Bond. The character has appeared in various films and novels, often portrayed as a stern but supportive figure. Throughout the series, M provides Bond with missions and guidance, balancing the need for national security with the complexities of espionage. The character has been portrayed by several actors, including Bernard Lee, Judi Dench, and Ralph Fiennes, each bringing their unique interpretation to the role.