Wes Craven was an American film director, writer, and producer who was best known for his work in the horror genre. He is credited with creating some of the most iconic horror films of all time, such as A Nightmare on Elm Street and Scream. His films often featured dark themes and explored the psychological effects of fear. He was also a pioneer in the use of special effects and makeup to create realistic and terrifying monsters. Craven's legacy continues to influence the horror genre today.