Guest Stars
Donna Kimball
voices Aughra
Jason Isaacs
voices The Emperor
Gugu Mbatha-Raw
voices Seladon
Mark Hamill
voices The Scientist
Caitríona Balfe
voices Tavra
Simon Pegg
voices The Chamberlain
Victor Yerrid
voices Hup
Harris Dickinson
voices Gurjin
Neil Sterenberg
voices The Scroll Keeper
Kevin Clash
voices Gruenak #1
Lena Headey
voices Maudra Fara
Toby Jones
voices Librarian
Neil Sterenberg
voices Gruenak #2
Mark Strong
voices Ordon
Helena Bonham Carter
voices All-Maudra
Louise Gold
voices Podling Servant #2
Natalie Dormer
voices Onica
Suzy Eddie Izzard
voices Cadia
Dave Goelz
voices Baffi
Dustin Demri-Burns
voices Daudran
