WonderCon is an annual comic book, science fiction, and motion picture convention, held in the San Francisco Bay Area (1987–2011) then, under the name WonderCon Anaheim, in Anaheim, California (2012-2015), and most recently WonderCon Los Angeles starting in 2016.The convention was conceived by retailer John Barrett (a founder of the retail chain Comics and Comix) and originally held in the Oakland Convention Center. In 2003, it moved to San Francisco's Moscone Center.