James Cosmo
605 Pop Culture Con is honored to welcome legendary Scottish actor James Cosmo as a very special guest for June 13-14, 2026 at the Sioux Falls Convention Center!
Best known to fans worldwide as Jeor Mormont, the “Old Bear” and Lord Commander of the Night’s Watch in Game of Thrones, James Cosmo has delivered unforgettable performances as grizzled veteran warriors across epic cinema and television.
His iconic roles include:
• Campbell in Braveheart
• Glaucus in Troy
• Father Christmas in The Chronicles of Narnia: The Lion, the Witch and the Wardrobe
• Hrothgar in The Last Legion
• Hengist in the BBC series Merlin
• Angus MacLeod in Highlander
….plus memorable guest appearances in FlashForward, Castle, and Sons of Anarchy.
This is a rare opportunity to meet the man behind some of the most respected warrior characters in modern fantasy and historical drama. Don’t miss your chance to get a photo, autograph, or hear stories from his incredible career!
Richard Horvitz
605 Pop Culture Con is thrilled to welcome legendary voice actor Richard Horvitz to the 5th Annual event!
Best known for his unforgettable performances, Richard is the voice behind Invader Zim, the hyper-chaotic Billy in The Grim Adventures of Billy & Mandy, Daggett in The Angry Beavers, and the iconic Alpha 5 in Mighty Morphin Power Rangers (plus multiple monsters across the franchise). His massive credits also include Helluva Boss (Moxxie), Psychonauts, Destroy All Humans, and tons of video games and animations.
With decades of experience and insane vocal range, Richard brings explosive energy to every role — making him a must-meet for Power Rangers fans and animation lovers!
Vanessa Marshall
Ladies and gentlemen, Rebels, Mandalorians, and galaxy far-far-away fans — ignite those lightsabers and crank up the hype!
Make some serious noise for the phenomenal voice superstar… Vanessa Marshall!
She’s the fearless voice of Hera Syndulla — the badass Twi’lek pilot and Ghost crew leader from Star Wars: Rebels, Forces of Destiny, and beyond!
She also rocked the armor as the fierce Mandalorian warrior Rook Kast in Star Wars: The Clone Wars… and she’s bringing that same fire back in the exciting new Disney+ series Shadow Maul! Plus, her legendary voice has blasted through the galaxy in video games too — including epic roles in Star Wars: The Old Republic, Kingdom Hearts II as Nala, and powering up heroes like Wonder Woman and Black Canary!
From Star Wars legends to epic gaming adventures, Vanessa Marshall brings the Force to every character she voices.