Nurse Mildred Ratched is a fictional character from the novel One Flew Over the Cuckoo's Nest by Ken Kesey. She serves as the head nurse in a mental institution and is known for her cold, manipulative demeanor. Ratched embodies the oppressive nature of the psychiatric system, using her authority to control and intimidate patients. In popular culture, Ratched has become a symbol of villainy in healthcare settings. Her character was further explored in the Netflix series Ratched, which delves into her backstory and motivations. The portrayal emphasizes her complex personality, blending professionalism with a ruthless desire for power.