- Ron Haddrick
- Â Adam Suisse (The Stranger) 12 episodes, 1964-1965
- Janice Dinnen
- Â Jean Walsh 12 episodes, 1964-1965
- Bill Levis
- Â Bernard Walsh 12 episodes, 1964-1965
- Michael Thomas
- Â Peter Cannon 11 episodes, 1964-1965
- John Faasen
- Â Mr. Walsh 10 episodes, 1964-1965
- Owen Weingott
- Â Professor Mayer 9 episodes, 1964-1965
- Ivor Bromley
- Â Colonel Nash 8 episodes, 1964-1965
- Reg Livermore
- Â Varossa 7 episodes, 1964-1965
- Don Philps
- Â Wilson / ... 7 episodes, 1964-1965
- Dennis Carroll
- Â Edward Mayer 6 episodes, 1965
- Jessica Noad
- Â Mrs. Walsh 6 episodes, 1964-1965
- Alexander Cann
- Â Rudolph Lindenberger 5 episodes, 1965
- Chuck Kehoe
- Â Blake 5 episodes, 1965
- Denys Burrows
- Â Chief Police Inspector 4 episodes, 1964-1965
- Mary Mackay
- Â Ex-Soshun / ... 4 episodes, 1964-1965
- Ben Gabriel
- Â Soshun 4 episodes, 1965
- Peter Johnson
- Â Police Constable 4 episodes, 1965
- Scott Tyler
- Â Soshun Pilot 4 episodes, 1965
- Richard Meikle
- Â Dr. Scott 3 episodes, 1965
- Jack Ford
- Â Police Sergeant 3 episodes, 1965
- Lance Peters
- Â Reporter 3 episodes, 1965
- Ray Lamont
- Â Reporter 3 episodes, 1965
- Grant Taylor
- Â Detective Inspector Chisholm 2 episodes, 1964
- Jeffrey Hodgson
- Â Detective Howell 2 episodes, 1964
- Ken Fraser
- Â Meldrum 2 episodes, 1965
- Max Osbiston
- Â Telescope Technician 2 episodes, 1965
- Bernie Baia
- Â Matoula 2 episodes, 1964-1965
- Vic Haggith
- Â Prime Minister's Secretary 2 episodes, 1965
- Kit Taylor
- Â R.M.S.F Smith 2 episodes, 1964-1965
- Victoria Anoux
- Â Soshuniss Citizen 2 episodes, 1964-1965
- Denis Doonan
- Â Blake's Driver 2 episodes, 1965
- Hubert Fischter
- Â Reporter 2 episodes, 1964-1965
- John Unicomb
- Â Istosin 2 episodes, 1964-1965
- Kerry Francis
- Â Soshun Pilot 2 episodes, 1965
- David Turnbull
- Â Reporter 2 episodes, 1965
- Chips Rafferty
- Â The Prime Minister 1 episode, 1965
- Peter Rowley
- Â Jeffrey Mason 1 episode, 1964
- John Fegan
- Â Policeman 1 episode, 1964
- Nigel Lovell
- Â Group Captain Ponsonby 1 episode, 1964
- Douglas Morgan
- Â Policeman 1 episode, 1964
- Henry Gilbert
- Â Hutchins 1 episode, 1964
- Robert McDarra
- Â Squadron Leader 1 episode, 1964
- Eve Wynne
- Â Soshuniss Elder 1 episode, 1964
- Keith Alexander
- Â John Robinson 1 episode, 1964
- Charles McCallum
- Â Soshuniss Elder 1 episode, 1964
- Desmond Rolfe
- Â Plumbridge 1 episode, 1965
- Richard Hughes
- Â Policeman 1 episode, 1965
- Guy Le Claire
- Â Indian Delegate 1 episode, 1964
- Ossie Wenban
- Â Postmaster 1 episode, 1965
- Xavier de Gonneville
- Â French Delegate 1 episode, 1964
- Jane Gilfillan
- Â Soshuniss Citizen 1 episode, 1964
- Moray Powell
- Â Dr. John 1 episode, 1965
- Ronne Arnold
- Â Dr. Kamutsa 1 episode, 1965
- Edward Nelson
- Â Police Constable 1 episode, 1965
- Carol Jackson
- Â Soshuniss Citizen 1 episode, 1964
- Tex Clarke
- Â Police Constable 1 episode, 1965
- Elizabeth Mason
- Â Soshuniss Citizen 1 episode, 1964
- Stewart Ginn
- Â Senator Anderson 1 episode, 1965
- Howard Bell
- Â Soshuniss Citizen 1 episode, 1964
- Peter Wagner
- Â Telescope Technician 1 episode, 1965
- Reg Evans
- Â Soshuniss Citizen 1 episode, 1964
- Judy Nunn
- Â Secretary 1 episode, 1965
- Kerry McGuire
- Â Nurse 1 episode, 1965
- Vaughan Tracey
- Â Chauffeur 1 episode, 1964
- Gordon Glenwright
- Â Lord Mayor 1 episode, 1965
- Tom Baker
- Â Reporter 1 episode, 1965
- Max Phipps
- Â Soshuniss Citizen 1 episode, 1964
- John Armstrong
- Â Attendant 1 episode, 1964
- Thelma Scott
- Â Lady Mayoress 1 episode, 1965
- John Llewellyn
- Â Attendant 1 episode, 1964
- Barry Ross
- Â Town Clerk 1 episode, 1965
- Herbert Logan
- Â Reporter 1 episode, 1965
- Ray Godden
- Â Reporter 1 episode, 1965
- Tim Cohen
- Â Reporter 1 episode, 1965
- Ron Lea
- Â Reporter 1 episode, 1965
- Bryce Morris-Yates
- Â Reporter 1 episode, 1965
- David Crocker
- Â Reporter 1 episode, 1965
