Origin: Gallifrey.
Joined the Doctor because: Unknown. Presumably he wanted the company. Or else he kidnaped her.
Left the Doctor because: He shut her up out of the ship after she fell for a hunky freedom figher called David.
First appearance: Episode 1, An Unearthly Child - 23rd November 1963. Last regular appearance: Episode 6, The Dalek Invasion of Earth (Flashpoint) - 26th December 1964. Reappeared in The Five Doctors, 25th November 1983. No other appearances in Doctor Who since.
Susan Foreman (Carole Ann Ford) starred in the following episodes of Doctor Who:
Season Two
Season Twenty
Character played by: Carole Ann Ford.
Carole Ann Ford's date of birth: June 1940.
Occupation: Science Teacher.
Origin: England Earth 1960s.
Joined the Doctor because: He was kidnapped after following the Barbara into the TARDIS.
Left the Doctor because: He followed Barbara when she decided to return Earth.
First appearance: Episode 1, An Unearthly Child - 23rd November 1963. Last regular appearance: Episode 6, The Chase (The Planet of Decision) - 26th June 1965.
Ian Chesterton (William Russell) starred in the following episodes of Doctor Who:
Season One
Season Two
Character played by: William Russell. (now Russell Enoch)
William Russel's date of birth: 19 November 1924.
Occupation: Astronaut.
Origin: Earth.
Joined the Doctor because: He was being held captive by the Mechanoids, which can be quite painful, and escaped when the Doctor showed him how.
Left the Doctor because: The Elders and Savages on a distant world wanted someone impartial to lead them. Steve was volunteered and decided to stay.
First appearance: Episode 6, The Chase - 26th June 1965. Last appearance: Episode 4, The Savages - 18th June 1966 . No reappearances of the role outside of flashbacks. Appeared as Morton Dill, Episode 2 of The Chase (The Death of Time) - 29th May 1965. No other appearances in Doctor Who since.
Steven Taylor (Peter Purves) starred in the following episodes of Doctor Who:
Season Two
Season Three
Character played by: Peter Purves.
Peter Purves's date of birth: 10 February 1939.
Rank: Brigadier.
Origin: England, Earth 1970s.
First met the Doctor when: He was put in charge of a group of squaddies playing soldiers in the London Underground.
First appearance: Episode 2, The Web of Fear - 10th February 1968. Last appearance: Battlefield, 6th - 27th September 1989. No other appearances in Doctor Who since.
Alastair Gordon Lethbridge-Stewart (Nicholas Courtney) starred in the following episodes of Doctor Who:
Season Five
Season Six
Season Seven
Season Eight
Season Nine
Season Ten
Season Eleven
Season Twelve
Season Thirteen
Season Twenty
Season Twenty-Six
Irregular as a regular, he appeared as part of UNIT for Patrick Troughton, Jon Pertwee, and Tom Baker. The Brigadier was never really a travelling companion of the Doctor his home was on earth. He has seen/met every Doctor apart from the Sixth (Colin Baker).
Character played by: Nicholas Courtney.
Occupation: Journalist.
Origin: England, Earth, early 1980s.
Joined the Doctor because: As a Journalist she was good at sticking her nose were it didn’t belong.
Left the Doctor because: She was tierd of traveling with the Doctor, and the Doctor wanted her to leave also because he could not take her to Gallifrey.
First appearance: Episode 1, The Time Warrior - 15th December 1973. Last appearance: Episode 4, The Hand of Fear - 23th October 1976. Reappeared with a the part in The Five Doctors, 25th November 1983. No other appearances in Doctor Who since.
Sarah Jane Smith (Elisabeth Sladen) starred in the following episodes of Doctor Who:
Season Eleven
Season Twelve
Season Thirteen
Season Fourteen
She was with Jon Pertwee when he regenerated into Tom Baker.This took place in The Planet Of The Spiders.
Character played by: Elisabeth Sladen.
Elisabeth Sladen's date of birth: 1 February 1948.
Origin: Mk 1’s components originated on Earth, but he was built at the Bi-Al Foundation. Mk ll was constructed in the TARDIS as was Mk lll.
Joined the Doctor because: Mk l was given to the Doctor by Professor Marius.Mk ll and lll were built by the Doctor himself.
Left the Doctor because: Mk l chose to remain with Leela on Gallifrey where it could spend it’s days aquiring as much knowledge as it could handle. Mk ll was damaged during the Doctor’s attempts to leave E-space and remained there with Romana.Mk lll was, bizarrely, sent to Sarah Jane Smith as a present.
K9 was originally created by Professor Marius of the Bi-Al Foundation located near Titan (The Invisible Enemy). K9's final appearance on the show was Warriors' Gate (1981) although he did get his own show with K9 and Company (1981) and made a brief appearance in the 20th anniversary story The Five Doctors (1983).
K9 starred in the following episodes of Doctor Who:
Season Fifteen
Season Sixteen
Season Seventeen
Season Eighteen
The voice of K-9 was played by John Leeson. Also played by David Brierley, 17th season.
K-9 a Time Lords best frend.
Occupation: Trainee Air Stewarrdess.
Origin: Australia, Earth, 1980s.
Joined the Doctor because: She mistakenly identified the TARDIS for a real police box despite the fact that it was twenty years out of date.
Left the Doctor because: She had enugh of all the murder and mayhem that tends to go with being a companion of the Doctor.
First appearance: Episode 1, Logopolis - 28th February 1981. Last appearance: Episode 2, Resurrection of the Daleks - 15th February 1984. Reappeared with a part in the regeneration scene, The Caves of Androzani - 16th March 1984. No other appearances in Doctor Who since.
Tegan Jovanka (Janet Fielding) starred in the following episodes of Doctor Who:
Season Eighteen
Season Nineteen
Season Twenty
Season Twenty-one
Character played by: Janet Fielding.
Janet Fielding's date of birth: 1957.
Rank: Junior Ensign Commander.
Origin: Troin.
Joined the Doctor because: Made a deal with the Black Guardian to help him kill the Doctor.
Left the Doctor because: He was allowed to return to his home planet Trion.
First appearance: Episode 1, Mawdryn Undead - 1st February 1983. Last appearance: Episode 4, Planet of Fire - 2nd March 1984. Reappeared with a part in the regeneration scene, The Caves of Androzani - 16th March. 1984. No other appearances in Doctor Who since.
Vislor Turlough (Mark Strickson) starred in the following episodes of Doctor Who:
Season Twenty
Season Twenty-one
Character played by: Mark Strickson.
Mark Strickson's date of birth: 1961.
Origin: From an unnamed planet, but found on Xeriphas by the Master.
Occupation: Weapon of war.
Joined the Doctor because: The Doctor hustled him into the TARDIS thinking he was Tegan.
Left the Doctor because: Fed up of being used by the Master, he asked the Doctor to kill him.
First appearance: Episode 1, The King's Demons - 15th March 1983. Last appearance: Episode 4, Planet of Fire - 2nd March 1984. Reappeared with a part in the regeneration scene, The Caves of Androzani - 16 Mar. 1984. No other appearances in Doctor Who.
Character played by: Gerald Flood.
Occupation: Waitress.
Origin: England, Earth, (Perivale)
Joined the Doctor because: She was bored of being a waitress on Iceworld and wanted to blow things up.
Left the Doctor because: Unknown.
First appearance: Episode 1 - Dragonfire - 23rd October 1987. Last appearance: Episode 3 - Survival - 6th December 1989. No other appearances in Doctor Who since.
Ace (Sophie Aldred) starred in the following episodes of Doctor Who:
Season Twenty-four
Season Twenty-five
Season Twenty-six
Character played by: Sophie Aldred.
Sophie Aldred's date of dirth: 20 August 1962.