John Michael "Ozzy" Osbourne (December 3, 1948 - July 22, 2025) was an English singer, songwriter, and television personality. He rose to prominence during the 1970s as the lead vocalist of the heavy metal band Black Sabbath, during which period he adopted the nickname "Prince of Darkness".
On Nickelodeon, he guest starred as the voice of Sid Fishy in Bubble Guppies.