In 2013, he played the title role in Sparks, a superhero noir film based on the graphic novel of the same name. The film reunited Williamson with Brown, and also stars Ashley Bell, william Katt, Jake Busey, and Clint Howard. After its premiere at the 2013 Cinequest Film Festival, the film was released digitally and straight to DVD on March 18, 2014. The same year, he joined the cast of Video Game High School in its second season. He portrays Shane Pizza, one of the show's antagonists. He also co-starred in The Guest, along with Dan Stevens. The film premiered at the 2014 Sundance Film Festival.