加里克·哈根
Garrick Hagon
饰：Bruno Ponti
马尔科姆·雷诺兹
Malcolm Reynolds
饰：Bill Knight,1 episode, 1973,
Ed Stewart
Ed Stewart
饰：Disc Jockey,1 episode, 1973,
Robert McBain
饰：Gregor Semyonov,1 episode, 1973,
Michael Lees
饰：Dr. Tony Ransome,1 episode, 1973,
John Hallam
饰：Dr. Peter Conway,2 episodes, 1973,
哈里·弗雷德尔
Harry Fielder
奥利弗·福德·戴维斯
Oliver Ford Davies
饰：Astronaut,1 episode, 1973,
拉尔夫·贝茨
Ralph Bates
饰：Dr. Michel Lebrun,6 episodes, 1973,
維克多·博蒙特
Victor Beaumont
饰：Franz Hauser,2 episodes, 1973,
迈克尔·高夫
Michael Gough
饰：Sir Benjamin Dyce,1 episode, 1973,
Peter Bathurst
饰：Director General,3 episodes, 1973,
唐纳德·休斯敦
Donald Houston
饰：Dr. David Caulder,6 episodes, 1973,
汤姆·肯平斯基
Tom Kempinski
饰：Dr. Stephen Partness,2 episodes, 1973,
安妮·里德勒
Anne Ridler
饰：Prof. Kate Weyman,1 episode, 1973,
Fiona Gaunt
Fiona Gaunt
饰：Dr. Helen Smith,6 episodes, 1973,
Cy Town
Cy Town
饰：Technician,2 episodes, 1973,
Madhav Sharma
Madhav Sharma
饰：Rao,3 episodes, 1973,
Jonathan Sweet
饰：Walters,2 episodes, 1973,
Patsy Trench
Patsy Trench
饰：Jenny,2 episodes, 1973,
Edward Brayshaw
饰：Adam Blaney,1 episode, 1973,
George Pravda
George Pravda
饰：General Alexis Trenkin,1 episode, 1973,
Nancie Wait
饰：Dodi Knight,1 episode, 1973,
Joanna Ross
Joanna Ross
饰：Jane,1 episode, 1973,
Aubrey Danvers-Walker
Aubrey Danvers-Walker
饰：Mr. Edward Hopkirk,1 episode, 1973,
Barry Lowe
饰：Tom Hill,6 episodes, 1973,
Christine Bradwell
Christine Bradwell
饰：Ingrid,4 episodes, 1973,
约翰·莫雷诺
John Moreno
饰：Juan Benavente,2 episodes, 1973,
Mary Ann Severne
Mary Ann Severne
饰：Sandy,2 episodes, 1973,
Jürgen Andersen
饰：Per Bengtson,1 episode, 1973,
米洛斯·基里克
Milos Kirek
饰：Colonel Dimitri Gararov,1 episode, 1973,
Denis DeMarne
Denis DeMarne
饰：Guido Mirandelli,1 episode, 1973,
Leonard Gregory
饰：Quiz Master,1 episode, 1973,
Perry Soblosky
Perry Soblosky
饰：Mather,1 episode, 1973,
Derek Anders
Derek Anders
饰：Dr. Andrew Robertson,1 episode, 1973,
Edmund Pegge
Edmund Pegge
饰：Macadam,1 episode, 1973,
Anthony Chinn
Anthony Chinn
饰：Gen. Cheng,1 episode, 1973,