Question: The famous publisher of Zenith Comics, Barry Johns, was kidnapped from which multi-genre entertainment and comic convention held annually in San Diego, California?

Context articles: Pensacola Comic Convention
San Diego Music Awards
San Diego Convention Center
Asia Pop Comic Convention
The Last Laugh (The Hardy Boys)
San Diego Comic-Con
Festival Internacional de Quadrinhos
Comic Art Convention
San Japan
Soonercon

Pensacola Comic Convention (Pensacola Comic Con; formerly known as Pensacola Para Con Comic Convention) is a convention for fans of science fiction, horror, fantasy, gaming, anime, costuming, fan films, and indie films held annually in Pensacola, Florida.
 The event is owned by Pensacola Comic Convention LLC.
 The event offers celebrity meet and greets, discussion panels, workshops, yard-sale vendor area, film screenings, demonstrations, costume contests, and competitions.
 The event also offers investigations at local historic haunted locations such the Pensacola Victorian Inn, the Pensacola Light House, the Pensacola Gray House, and the Pensacola Little Theater.
 A portion of the proceeds of the event are donated to Making Strides with Breast Cancer.
The San Diego Music Awards are an awards show held annually in San Diego, California, United States, to recognize the best bands and artists in local music.
 The awards have been held since 1991 and were originally organized by the city's main local music publication, (formerly called SLAMM), which eventually became the alternative newsweekly "San Diego CityBeat".
 The awards are now organized by the San Diego Music Foundation.
 The show benefits the San Diego Music Foundation, a non-profit organization dedicated to promoting San Diego music education programs.
 Over the years the show has featured awards in a variety of categories covering nearly every genre of music, and featured live performances by such major-label recording artists as Blink-182, Switchfoot, and Jason Mraz, as well as lesser known up-and-coming artists, such as Steve Poltz.
The San Diego Convention Center is the primary convention center in San Diego, California.
 It is located in the Marina district of downtown San Diego near the Gaslamp Quarter, at 111 West Harbor Drive.
 The center is managed by the San Diego Convention Center Corporation, a non-profit public benefit corporation created by the City of San Diego.
 The corporation also manages the San Diego Civic Theatre through a subsidiary called San Diego Theatres Inc.
AsiaPOP Comic Convention, also known as AsiaPOP Comicon, or simply APCC, is an annual comic book fan convention held in Metro Manila, Philippines.
 APCC features international brands in the fields of comics, toys, animation, film, television and music within the pop culture phenomena.
 The convention has since included a larger range of pop culture and entertainment elements across virtually all genres, such as video games, books and sports.
 APCC is the largest pop culture convention in the Philippines and South East Asia, and one of the largest in Asia.
The famous publisher of Zenith Comics, Barry Johns, is kidnapped from the San Diego comic-book convention by characters "Human Dreadnought" and "Flame Fiend", observed by the Hardys.
 Joe and Frank think it was a publicity stunt, but then a kidnapper destroys a valuable art collection.
San Diego Comic-Con International is a multi-genre entertainment and comic convention held annually in San Diego, California, United States.
 The name, as given on its website, is Comic-Con International: San Diego; but it is commonly known simply as Comic-Con or the San Diego Comic-Con or "SDCC".
Festival Internacional de Quadrinhos is an comic convention held in Belo Horizonte, Brazil, every two years.
 It has been voted as the premier event of comics in the country and was awarded with Troféu HQ Mix.
 In 2011 surpassed visitors to events like Comic-Con in San Diego and is now considered the biggest comic convention in America.
The Comic Art Convention was an American comic-book fan convention held annually New York City, New York, over Independence Day weekend from 1968 through 1983, except for 1977, when it was held in Philadelphia, Pennsylvania, and 1978 to 1979, when editions of the convention were held in both New York and Philadelphia.
 The first large-scale comics convention, and one of the largest gatherings of its kind until the Comic-Con International in San Diego, California, it grew into a major trade and fan convention.
 It was founded by Phil Seuling, a Brooklyn, New York City, teacher, who later developed the concept of comic-book direct marketing, which led to the rise to the modern comic book store.
San Japan is a Japanese culture and anime convention held annually in San Antonio, Texas.
 The event, which debuted in 2008, is San Antonio's first major anime convention and has developed into the largest Japanese fan-oriented convention in the city.
 Many credit San Japan with forcing open the doors for big pop-culture conventions in the Alamo City, such as Alamo City Comic Con (established in 2013 and one of the largest and fastest growing comic conventions in the country).
 San Japan was noted in the 2015 San Antonio Current City Guide "100 Things To Do In San Antonio Before You Die".
SoonerCon is a fan-run multi-genre convention held annually in Oklahoma City, Oklahoma and suburbs, currently Midwest City since 2013.
 SoonerCon was founded in 1986 but went dormant after the 1997 event.
 In 2005, a group of fans, headed by con chair Jerry Wall, re-established SoonerCon as the multi-genre convention of central Oklahoma and worked to a 2007 relaunch event.
 While originally created as a traditional sci-fi/fantasy "litcon" embracing art, TV/film, costuming, gaming, filksinging, comics and real-space advocacy, SoonerCon now crosses over to even more aspects of fandom including anime, miniature modeling, and film production.