Cedric Hardwicke

as Self (archive footage)

as Self (archive footage)

as Dr. Frankenstein (archive footage)

as Mr. James - Jo's father

as Colas

as John Busch (1 episode)

as Colas (as Sir Cedric Hardwicke) (1 episode)

as Fergusson

as Professor Crayton (26 episodes)

as Simon Polk (1 episode)

as Doc Saunders (as Sir Cedric Hardwicke)

as High Judge

as Lord Hertford (1 episode)

as Self (1 episode)

as Francis Cromarty

as Sethi

as Mr. Carew

as Tristan

as Mr. Edgar Carrington

as Priam

as Ruggieri

as King Edward IV of England

as Mr. Princey (1 episode), as John Anderson (1 episode)