Guest Stars Roger Delgado as The Master (1st) Michael Hawkins as General Williams Vera Fusek as President of Earth Peter Birrel as Draconian Prince William Wilde as Draconian Captain Michael Kilgarriff as Second Ogron Stephen Thorne as First Ogron Rick Lester as Third Ogron John Woodnutt as Draconian Emperor Ian Frost as Draconian Messenger Clifford Elkin as Earth Cruiser Captain