Answer
Freddy Krueger, portrayed by Robert Englund, originally worked as a school janitor before his heinous transformation into a notorious child murderer. He preyed upon children in their dreams, haunting them as the embodiment of their fears. Freddy's malevolent spirit continued to haunt the dreams of Springwood's young residents even after his death, making him a persistent and formidable adversary for those unfortunate enough to cross his path.