Guest Stars
Donna Kimball
voices Aughra
Gugu Mbatha-Raw
voices Seladon
Mark Hamill
voices The Scientist
Jason Isaacs
voices The Emperor
Simon Pegg
voices The Chamberlain
Benedict Wong
voices The General
Caitríona Balfe
voices Tavra
Victor Yerrid
voices Hup
Harris Dickinson
voices Gurjin
Neil Sterenberg
voices The Scroll Keeper
Awkwafina
voices The Collector
Harvey Fierstein
voices The Gourmand
Toby Jones
voices Librarian
Mark Strong
voices Ordon
Helena Bonham Carter
voices All-Maudra
Natalie Dormer
voices Onica
