Jack Osbourne is Ozzy and Sharon Osbourne’s youngest child. After appearing on The Osbournes, he continued being a media personality starring in shows such as Jack Osbourne: Adrenaline Junkie (2005–2009) and BBC’s Saving Planet Earth (2007).

Osbourne died this past Tuesday, at the age of seventy-six; his family didn’t announce a cause, but he had previously disclosed that he had Parkinson’s disease. By the time of his death, Osbourne had been doubly transformed by Iommi’s good idea about “evil.

In her first comments since his death, Kelly Osbourne posted the opening lyrics from the song on Instagram with a broken heart emoji: "I feel unhappy I am so sad. I lost the best friend I ever had." The father-daughter duo were known for having a close relationship.