Terrence Hardiman

as Old Demon Headmaster (1 episode)

as John Addington

as Professor Griesel (1 episode)

as Doctor Evans (1 episode)

as Mr. Green (1 episode)

as Gallery Visitor

as Captain Pim

as Hakan von Enke (2 episodes)

as Professor Ratcher

as Hawthorne (1 episode)

as Gerard (4 episodes)

as Dr. Sedgewick (1 episode)

as The Svit

as Severin (3 episodes)

as Fitzgerald

as Grand Wizard Egbert Hellibore (4 episodes)

as James MacKenzie (1 episode)

as Andre Masson (1 episode)

as Dr. James Lavery (1 episode)

as Colonel Sir John Herncastle

as Himself (1 episode)

as Military Officer

as The Demon Headmaster (19 episodes)

as Abbot Radulfus