Singer/songwriter well-known for his work with hard rock and metal bands Black Sabbath and Rainbow. He also fronted his own eponymous band, Dio.
He went to the University of Buffalo with the intent of becoming a pharmacist but he dropped out after a year.
One of the last songs he ever recorded was "Metal Will Never Die."
He was married twice, to Loretta Berardi and Wendy Dio. He had one son, Dan Padavona.
He replaced Ozzy Osbourne in Black Sabbath.