"Avatar"'s success has led to some promotional advertising with third-party companies, such as Burger King and Upper Deck Entertainment. "Avatar"-themed roller coasters at Nickelodeon Universe in the Mall of America and one formerly at "Kings Island" also appeared. During the show's runtime, Nickelodeon published two special issues of "Nick Mag Presents" dedicated entirely to the show. Various members of the "Avatar" staff and cast appeared at the 2006 San Diego Comic-Con International convention, while Michael Dante DiMartino and Bryan Konietzko appeared with Martial Arts Consultant Sifu Kisu at the Pacific Media Expo on October 28, 2006. "Avatar" also has its own line of T-shirts, LEGO , toys, a trading card game, a cine-manga, and three video games, as well as an MMO.