Castle was president of the Bloom County Fan Club (thus the name 'Opus,' in honor of the Bloom County character) he hoped (and ultimately failed) to get Bloom County creator Berkeley Breathed as the con's guest of honor. The Macon Opus Con was founded in 1986 by comics retailer Roland Castle, owner of Comics Castle in Macon, Georgia. Magnum Opus Con petered out by the early 2000s due to bad feelings and competition from the much larger and more popular Atlanta-based Dragon Con. Macho Contest.' Other late-night activities included the 'MOC-Alympics,' belly dancing, 'MOC(k) Marriages,' and 'Casino Night.' These events gradually became more of the focus of the convention, to the detriment of the panels and workshops.

By the early 1990s, the show became known for its parties and risqué cosplay events such as the 'Bimbo Pageant,' the 'Slave Auction,' and the 'Mr. Attendees were required to be 18 years or older, or accompanied by an adult. Magnum Opus Con worked on a 'membership' basis, which enabled attendees to gain admittance to the convention for the entire weekend. Along with panels, seminars, and workshops with industry professionals, MOC often featured previews of upcoming films and even a celebrity softball game. The convention featured a large floorspace for exhibitors, including collectibles merchants and comic book dealers. Most MOCs took place over three days, from Friday to Sunday. Over its 16-year run, MOC featured hundreds of celebrity guests and ran hundreds of hours of programming for fans of science fiction, fantasy, comic books, gaming, and other elements of fandom. Organized by comics retailer Roland Castle, the convention was designed to attract science fiction fans of all stripes. states of Georgia and South Carolina from 1986 to 2001. Magnum Opus Con ( MOC) was an annual multigenre convention which generally took place each spring in various cities in the U.S. Roland Castle/Middle Georgia Society for Fantasy and Science Fiction

Preacher, Volume 1 by Garth Ennis