スレンダーマン
Despite his folkloric qualities, the Slender Man is not in the public domain. Several for-profit ventures involving the Slender Man have unequivocally acknowledged Knudsen as the creator of this fictional character, while others were civilly blocked from distribution (including the Kickstarter-funded film) after legal complaints from Knudsen and other sources. Though Knudsen himself has given his personal blessing to a number of Slender Man-related projects, the issue is complicated by the fact that, while he is the character's creator, a third party holds the options to any adaptations into other media, including film and television. The identity of this option holder has not been made public. Knudsen himself has argued that his enforcement of copyright has less to do with money than with artistic integrity: "I just want something amazing to come off it... something that's scary and disturbing and kinda different. I would hate for something to come out and just be kinda conventional." As of May 2016, the media rights to Slender Man have been sold to production company Mythology Entertainment.