Science fiction fandom other groups including LGBT communities, libertarians, neo-pagans, and space activist groups like the L5 Society, among many others. Some groups exist almost entirely within fandom but are distinct and cohesive subcultures in their own rights, such as filkers, costumers, and convention runners (sometimes called "SMOFs"). Fandom encompasses subsets of fans that are principally interested in a single writer or subgenre, such as Tolkien fandom, and ("Trekkies"). Even short-lived television series may have dedicated followings, such as the fans of Joss Whedon's "Firefly" television series and movie "Serenity", known as Browncoats. Participation in science fiction fandom often overlaps with other similar
Joss Whedon Whedon funded her album and when Kilgore contacted him about his fulfillment reward, he suggested they make a song together. She agreed, and the collaboration was later repurposed into producing an EP. At the 2015 San Diego Comic-Con International, Whedon announced "Twist", which was described as a comic book about "a Victorian female Batman". In 2017, Whedon directed "Unlocked", a short film in support of Planned Parenthood. In May 2017, Whedon took over post-production duties for "Justice League", including writing, and directing additional photography for the film. He received a co-writing credit for his contributions to the film, which was