as "Kage" or "K.G." Ronnie James Dio as himself Dave Grohl as Satan Meat Loaf as Bud Black JR Reed as Lee Ben Stiller as Guitar Center Guy Paul F. Tompkins as Open Mic Host Tim Robbins as The Stranger John C. Reilly as Sasquatch Cynthia Ettinger as Betty Black Andrew Caldwell as Billy Black Amy Poehler as Truck Stop Waitress Colin Hanks as Drunk Frat Dude Amy Adams as Gorgeous Woman Gregg Turkington as Neil Hamburger Evie Peck as KG's Mother Jason Segel as Frat Boy #1 (deleted scene) David Krumholtz as Frat Boy #2 (deleted scene) Fred Armisen as Security Guard #1 Ned Bellamy as Security Guard #2 Jay Johnston as Gang Member #1 John Ennis as Gang Member #2 David Koechner as Surplus Store Clerk (deleted scene) Production As actors, Black and Gass had wished to make a Tenacious D film since the band's forming in 1994; archived footage of banter at an early concert records Black saying "a movie – like that would be the pinnacle". The duo conceptualized numerous ideas for the plot, though the first actual known draft of a script was published on November 7, 2000. The script was based around many songs that would later be released on the duo's eponymous debut album that would be released the following year. There is little known about the script, other than it being based around the band playing coffee shops, Black becoming fascinated by Atlantis and Black and Gass both falling in love with a girl called Simmeon who has written books about the fictional island. They later meet Ronnie James Dio, and are sent on a road trip to Miami. This concept was later scrapped.Tenacious D in The Pick of Destiny At some point prior to 2003, the band were in negotiations with British studio Working Title Films to write and distribute a Tenacious D film, but Black and Gass decided to assume creative control when they were not satisfied with the writers' ideas. In February 2003, it was announced that the band had signed with New Line Cinema to create a Tenacious D film, with Liam Lynch as the director, and Black, Gass and Lynch writing the script and being producers on the production. There was also speculation that Red Hour Productions would produce the film, which was later confirmed. Later in 2003, Black announced the film's working title as Tenacious D