Guillermo del Toro Creator, Executive Producer Kelsey Grammer Blinky Voice Anton Yelchin Jim Lake Jr. Voice Emile Hirsch Jim Lake Jr. Voice Charlie Saxton Toby Voice Lexi Medrano Claire Voice Ron Perlman Bular Voice Jonathan Hyde Mr. Strickler Voice Fred Tatasciore Aaarrrgh Voice Amy Landecker Barbara Voice Steven Yeun Steve Voice Mark Hamill Dictatious Voice Lena Headey Morgana Voice David Bradley Merlin Voice Anjelica Huston Queen Ursurna Voice Tatiana Maslany Aja Voice Diego Luna Krel Voice Marc Guggenheim Executive Producer Rodrigo Blaas Executive Producer Christina Steinberg Executive Producer Chad Hammes Executive Producer