Where the nickname 'Prince of Darkness' came fromImage source, Getty ImagesOsbourne has had many aliases over the years, but one that has been the most longstanding is the "Prince of Darkness". It is another name for the devil used in works like "Paradise Lost" but the nickname was started by fans after the release of some of his "scarier" songs. In an interview with NME in 2016, Osbourne said the song "Black Sabbath" originally freaked out some concert attendees. "They thought we were Satan’s [expletive] friends or something," Osbourne said. "That’s when the whole Prince of Darkness [expletive] started."