Taron Egerton Rian Voice Anya Taylor-Joy Brea Voice Nathalie Emmanuel Deet Voice Caitriona Balfe Tavra Voice Helena Bonham Carter All-Maudra Voice Harris Dickinson Gurjin Voice Natalie Dormer Onica Voice Suzy Eddie Izzard Cadia Voice Theo James Rek'yr Voice Toby Jones Librarian Voice Shazad Latif Kylan Voice Gugu Mbatha-Raw Seladon Voice Mark Strong Ordon Voice Alicia Vikander Mira Voice Harvey Fierstein The Gourmand Voice Mark Hamill The Scientist Voice Ralph Ineson The Hunter Voice Jason Isaacs The Emperor Voice Keegan-Michael Key The Ritual Master Voice Ólafur Darri Ólafsson The Archer Voice Simon Pegg The Chamberlain Voice Andy Samberg The Heretic Voice Donna Kimball Aughra Voice Alice Dinnean The Ornamentalist Voice Louise Gold Maudra Argot Voice Neil Sterenberg The Scroll-Keeper Voice Victor Yerrid Hup Voice Lena Headey Maudra Fara Voice Benedict Wong The General Voice Awkwafina The Collector Voice Sigourney Weaver The Myth-Speaker Voice Hannah John-Kamen Naia Voice Dave Goelz Baffi Voice Lisa Henson Executive Producer Louis Leterrier Executive Producer Halle Stanford Executive Producer