Ray of Fast-Food Fame is a term used to describe Ray Kroc, the founder of McDonald's. Kroc was an entrepreneur who revolutionized the fast-food industry by introducing the concept of franchising. He opened the first McDonald's restaurant in 1955 and went on to expand the business into a global empire. His legacy lives on today as McDonald's remains one of the most recognizable brands in the world. The four letter solution for Ray of Fast-Food Fame is KROC.