Legendary BLACK SABBATH members Bill Ward and Geezer Butler will make a special appearance at the upcoming Monsterpalooza horror convention in Pasadena, California.

The event will take place from May 29-31 at the Pasadena Convention Center, where fans can meet Bill and Geezer for professional photo opportunities.

Pro-photo ops with the BLACK SABBATH legends are available now through Celeb Photo Ops.

The convention features a lineup of Hollywood's most celebrated monster-makers, actors, and directors, including panel discussions, celebrity guests, and over 400 vendors selling horror-related goods.

According to creator Eliot Brodsky, Monsterpalooza is a celebration of the art of monster-making and the movie magic behind creating creatures and characters on screen.

Event tickets are required for participation and are currently available on Eventbrite.

Pro-photo ops with Bill and Geezer can be purchased separately through Celeb Photo Ops.