Randle P. McMurphy is a fictional character from the novel "One Flew Over the Cuckoo's Nest" by Ken Kesey. He is a rebellious and charismatic man who fakes insanity to escape a prison sentence. McMurphy is sent to a mental institution, where he challenges the oppressive rules enforced by the staff, particularly Nurse Ratched. Throughout the story, McMurphy becomes a symbol of individuality and resistance against conformity. His interactions with other patients, including Chief Bromden, highlight themes of freedom and the struggle against authoritarian control. McMurphy's character ultimately serves as a catalyst for change within the institution.