Ozzy Osbourne has canceled his appearance at the Mad Monster Party, scheduled from July 12 to July 14 at the Renaissance Phoenix Glendale Hotel & Spa in Glendale, Arizona. In a video message, shared on Tuesday (25th), Ozzy’s wife and manager, Sharon Osbourne, announced the cancellation, citing Ozzy’s inability to travel. However, their son Jack Osbourne will attend on behalf of the family. Refunds will be provided for those who purchased the Osbourne package.