Brigadier Sir Alistair Gordon Lethbridge-Stewart, generally referred to simply as the Brigadier, is a fictional character in the British science fiction television series Doctor Who, created by writers Mervyn Haisman and Henry Lincoln and played by Nicholas Courtney. He is one of the founders of UNIT, an international organisation that defends Earth from alien threats, and serves as commander of the British contingent. Presented at first as reluctant to accept the continuing aid of the Doctor, over time the Brigadier became one of the Doctor's greatest friends and his principal ally in defending Earth.
Mawdryn Undead is the third serial of the 20th season of the British science fiction television series Doctor Who, which was originally broadcast in four twice weekly parts on BBC1 from 1 to 9 February 1983.
Terror of the Autons is the first serial of the eighth season of the British science fiction television series Doctor Who. It was broadcast in four weekly parts on BBC1 from 2 to 23 January 1971.
The Five Doctors is a special feature-length episode of the British science fiction television series Doctor Who, produced in celebration of the programme's 20th anniversary. It had its world premiere in the United States, on the Chicago PBS station WTTW and various other PBS member stations on 23 November 1983, the anniversary date. It was transmitted on BBC1 in the United Kingdom two days later.
Tegan Jovanka is a fictional character played by Janet Fielding in the long-running British science fiction television series Doctor Who. An Australian airline stewardess and a native of Brisbane who was a companion of the Fourth and Fifth Doctors, she was a regular in the programme from 1981 to 1984. Tegan appeared in 20 stories.
Nyssa is a fictional character in the long-running British science fiction television series Doctor Who. She is played by Sarah Sutton. Although Nyssa was created by writer Johnny Byrne for the single Fourth Doctor serial The Keeper of Traken, the production team subsequently decided she should be retained as a continuing character. Nyssa returned in the following serial, Logopolis, in which the Fourth Doctor regenerated, and remained as a companion of the Fifth Doctor. She was a regular in the programme from 1981 to 1983.
Adric is a fictional character played by Matthew Waterhouse in the long-running British science fiction television series Doctor Who. He was a young native of the planet Alzarius, which exists in the parallel universe of E-Space. A companion of the Fourth and Fifth Doctors, he was a regular in the programme from 1980 to 1982 and appeared in 11 stories. The name Adric is an anagram derived from Nobel Prize-winning physicist Paul Dirac.
Vislor Turlough is a fictional character played by Mark Strickson in the long-running British science fiction television series Doctor Who. He was a companion of the Fifth Doctor, being a regular in the programme from 1983 to 1984. Turlough appeared in 10 stories.
Castrovalva is the first serial of the 19th season of the British science fiction television series Doctor Who, which was first broadcast in four twice-weekly parts on BBC1 from 4 to 12 January 1982. It was the first full serial to feature Peter Davison as the Fifth Doctor. The title is a reference to the lithograph Castrovalva by M. C. Escher, which depicts the town Castrovalva in the Abruzzo region, Italy.
Terror of the Zygons is the first serial of the 13th season of the British science fiction television series Doctor Who, which was the first broadcast in four weekly parts on BBC1 from 30 August to 20 September 1975. It was the last regular appearance by Ian Marter as companion Harry Sullivan and Nicholas Courtney as Brigadier Lethbridge-Stewart.
The Fifth Doctor is an incarnation of the Doctor, the protagonist of the BBC science fiction television series Doctor Who. He is portrayed by Peter Davison.
The King's Demons is the sixth and final serial of the 20th season of the British science fiction television series Doctor Who, which was originally broadcast on BBC1 on 15 and 16 March 1983. This serial introduced Kamelion, voiced by Gerald Flood, as a companion.
Warriors of the Deep is the first serial of the 21st season of the British science fiction television series Doctor Who, which was broadcast in four twice-weekly parts on BBC1 from 5 to 13 January 1984.
The Awakening is the second serial of the 21st season of the British science fiction television series Doctor Who, which was originally broadcast on BBC1 on 19 and 20 January 1984.
The Devil Goblins from Neptune is a BBC Books original novel written by Martin Day and Keith Topping and based on the long-running British science fiction television series Doctor Who. It was the first novel published in the Past Doctor Adventures range and features the Third Doctor, UNIT, The Brigadier, and Liz Shaw.
The Scales of Injustice is a Virgin Missing Adventures original novel written by Gary Russell based on the long-running British science fiction television series Doctor Who. It features the Third Doctor, Liz Shaw and UNIT.
The Sands of Time is a 1996 Virgin Missing Adventures original novel written by Justin Richards based on the long-running British science fiction television series Doctor Who. It features the Fifth Doctor, Nyssa, and Tegan. The story is a sequel to the 1975 Fourth Doctor Pyramids of Mars and once again features the Osirans.
In the long-running BBC television science fiction programme Doctor Who and related works, the term "companion" refers to a character who travels or shares adventures with the Doctor. In most Doctor Who stories, the primary companion acts as an audience surrogate. They provide the lens through which the viewer is introduced to the series. The companion character often furthers the story by asking questions and getting into trouble; also by helping, rescuing, or challenging the Doctor. This designation is applied to a character by the show's producers and appears in the BBC's promotional material and off-screen fictional terminology. The Doctor also refers to the show's other leads as their "friends" or "assistants"; the British press have also used the latter term.
The twentieth season of British science fiction television series Doctor Who began on 3 January 1983 with the story Arc of Infinity, and ended 16 March 1983 with The King's Demons. A 20th Anniversary special, The Five Doctors, followed in November 1983. John Nathan-Turner produced this series, with Eric Saward script editing.
The thirteenth season of British science fiction television series Doctor Who began on 30 August 1975 with the story Terror of the Zygons, and ended with The Seeds of Doom. This is the second series to feature the Fourth Doctor, played by Tom Baker, with Philip Hinchcliffe producing and Robert Holmes script editing. It was ranked as readers' favourite season in Doctor Who Magazine issue 413.
