Author’s Note: The title of this article comes from the 1988 film Hell Comes to Frogtown starring the magnificent Rowdy Roddy Piper. If you haven’t seen it, go drop $3 and watch it on Amazon. You’ll either love me or hate me.

A trio of demons will descend upon Denver in June at the Denver Pop Culture Con. The original Hellboy, Ron Perlman, and Red’s newest incarnation and everyone’s favorite sheriff from the acclaimed series Stranger Things, David Harbour, will be joined by Mark Sheppard who played Crowley, the Supernatural King of Hell himself.

Sci-Fi fans should be well acquainted with Sheppard’s work as he has graced the small screen of many of the biggest names in the genre. In addition to playing the small-time crook, Badger, in the Firefly ‘verse, Sheppard’s roles also include appearances on Star Trek: Voyager, Battlestar Galactica, The X-Files, Warehouse 13, and Doctor Who.

David Harbour will be joined at the Denver Pop Culture Con this year by at least five of his fellow Stranger Things cast members: Sadie Sink (Max), Matty Cardarople (Keith, the Arcade guy), Caleb McLaughlin (Lucas), Gaten Matarazzo (Dustin), and Noah Schnapp (Will). Before his role as Jim Hopper, Harbour could be found alongside Will Smith and Margot Robbie in Suicide Squad and Johnny Depp and Benedict Cumberbatch in Black Mass. Fans of Aaron Sorkin’s Newsroom will also recognize him as late night anchor Elliot Hirsch.

Whether he’s raising hell in Sons of Anarchy or raising from hell bearing the Right Hand of Doom, Ron Perlman is a master of making the bad look good. Perlman is also criminally less well known for his phenomenal voice acting, which includes bringing to life such characters as Fire Lord Sozin (Avatar: The Last Airbender), Vice Principal Lancer (Danny Phantom), and an entire host of DC heroes and villains including Matt Hagen / Clayface, Jax-Ur, Orion, Slade, Killer Croc, Bane, Rumor, Doctor Double X, Sinestro, and Deathstroke.

Harbour will be appearing Saturday only while Perlman and Sheppard will be attending both Saturday and Sunday. Autograph and photo opportunities will be available for all three. Watch the Denver Pop Culture Con website for more details.

Denver Pop Culture Con (DPCC) is a 3-day, family-friendly pop culture fan extravaganza. DPCCis a program of the Colorado nonprofit Pop Culture Classroom, whose mission is to inspire a love of learning, to increase literacy, celebrate diversity and build community through pop culture education. The proceeds from this annual event benefit Pop Culture Classroom’s overall educational endeavors.