Creepypastas once felt like they'd be the most influential force in horror media. Characters like Slenderman and Jeff the Killer were all over social media, and mainstream adaptations seemed inevitable. They don't have the same cultural sway today. They've only become more niche. Nick Antosca's Channel Zero was one of the few TV series to capitalize on the ideas found in forum posts. Pretzel Jack, the antagonist of season 4, was created for the show.