|The Third Doctor|
|Portrayed by||Jon Pertwee|
|First appearance||Spearhead from Space|
|Last appearance||Planet of the Spiders (regular)
The Five Doctors (guest star)
Dimensions In Time (charity special)
|Number of series||5|
|Appearances||24 stories (128 episodes)|
Sarah Jane Smith
|Preceded by||Second Doctor (Patrick Troughton)|
|Succeeded by||Fourth Doctor (Tom Baker)|
|Series||Seasons 7 to 11|
Within the series' narrative, the Doctor is a centuries-old Time Lord alien from the planet Gallifrey who travels in time and space in his TARDIS, frequently with companions. When the Doctor is critically injured, his body automatically regenerates; as a result, his physical appearance and personality change.
|This section does not cite any references or sources. (September 2010)|
The Third Doctor was a suave, dapper, technologically oriented, and authoritative man of action who not only practised Venusian Aikido (or Karate) but enjoyed working on gadgets and riding all manner of vehicles, such as the Whomobile and his pride and joy, the canary-yellow vintage roadster nicknamed "Bessie," a construct which featured such modifications as a remote control, dramatically increased speed capabilities, and inertial dampeners. The First Doctor, upon meeting the Third, described him indignantly as a "dandy."
While this incarnation spent most of his time exiled on Earth, where he grudgingly worked as UNIT's scientific advisor, he was occasionally sent on covert missions by the Time Lords, where he would often act as a reluctant mediator. Even though he developed a fondness for Earthlings with whom he worked (such as Liz Shaw and Jo Grant), he jumped at any chance to return to the stars with the enthusiasm of a far younger man than himself (as can be seen in his frivolous attitude in The Mutants). If this Doctor had a somewhat patrician and authoritarian air, he was just as quick to criticise authority, too, having little patience with self-inflated bureaucrats, parochially narrow ministers, knee-jerk militarists or red tape in general. His courageousness could easily turn to waspish indignation; it is thus no surprise that a common catchphrase of his was, "Now listen to me!"
Despite his now-and-then arrogance, the Third Doctor genuinely cared for his companions in a paternal fashion, and even held a thinly veiled but grudging admiration for his nemesis, the Master, and for UNIT's leader, Brigadier Lethbridge-Stewart, with whom he eventually became friends. In fact, even when his much-resented exile was lifted, the highly moral and dashing Third Doctor continued to help UNIT protect the Earth from all manner of alien threats.
In general, this incarnation of the Doctor was more physically daring than the previous two and was the first to confront an enemy physically if cornered (both of his previous incarnations nearly always attempted to dodge, flee or negotiate rather than attack). This often took the form of quick strikes, with the occasional joint lock or throw—usually enough to get himself and anyone accompanying him out of immediate danger, but usually not to the extent of a brawl, in keeping with the Doctor's non-violent nature. He only used his fighting skills if he had no alternative, and even then generally disarmed his opponents rather than knocking them unconscious. Indeed, his martial prowess was such that a single, sudden strike was usually enough to halt whatever threatened him, and at one point he reminded Captain Yates (physically as well as verbally) that Yates would have a difficult time removing him from somewhere when he did not want to be removed (The Mind of Evil).
Perhaps due to his time spent on Earth, or maybe just as a function of his pacifistic and authoritative tendencies, the Third Doctor was a skilled diplomat (keeping talks going in The Curse of Peladon, for example) and linguist, as well as having an odd knack for disguises; all of this, combined with his formidable galactic experience, often allowed the Third Doctor to play a central role in the events in which he found himself.
Always charismatic, this Doctor had a personal manner of dress that is the most ornate of his various incarnations, favouring frilled shirts; velvet smoking jackets in blue, green, burgundy, red, or black; evening trousers in colours matching those of his smoking jackets; formal boots, riding boots, dress shoes, and Inverness cloaks for his regular outfit; with variations and accessories including bow ties, cravats, and leather gloves. All of these earned the Third Doctor the nickname of "The Dandy Doctor." In The Three Doctors, the First Doctor, commenting on the Third and Second Doctor respectively, disparagingly referred to them as "a dandy and a clown."
Jon Pertwee credited his performance as the Third Doctor for helping him figure out exactly who he really was when he was not resorting to comedic disguises or voices: a dapper, technologically oriented man of action. This was because Terrance Dicks had advised him to act out the Third Doctor as himself: in effect, to "play Jon Pertwee." Pertwee remembered asking himself, when so advised, "Now who in the hell is that?" His performances, he said in his later years, helped him figure out the answer to that question.
The Third Doctor sported a mark on his arm not carried by any of his other incarnations. This was a tattoo that Pertwee obtained during his service in the Royal Navy. The mark was eventually explained in the New Adventures novel Christmas on a Rational Planet as being a Time Lord symbol signifying an exile, which was removed once the Doctor's exile was lifted. However, as with all items of other media, it is unclear whether this explanation is part of the character's official continuity.
Story style 
The Third Doctor stories were the first to be broadcast in colour. The early ones were set on Earth due to cost constraints on the series. To explain this, the Second Doctor was banished to Earth by his race the Time Lords, and forced to regenerate. On Earth he worked with the Brigadier and the rest of the UNIT team. However, as his tenure progressed he had reasons to leave Earth, on occasions being sent on missions by the Time Lords. Eventually, after his defeat of the renegade Omega in The Three Doctors he was granted complete freedom by the Time Lords in gratitude for saving Gallifrey.
The Third Doctor's era introduced many of the Doctor's more memorable adversaries. The Autons, the Master, Omega, the Sontarans, the Silurians and the Sea Devils all made their debut during this period, and the Daleks returned after a five-year absence about halfway through Pertwee's run. The Third Doctor was the only one from the classic series not to have a story featuring the Cybermen (although they were seen briefly in The Mind of Evil and Carnival of Monsters), but he did eventually encounter them during The Five Doctors.
"Reverse the polarity" 
The catchphrase most associated with the Third Doctor's era is probably "reverse the polarity of the neutron flow". The phrase was Pertwee's way of dealing with the technobabble that he was required to speak as the Doctor. Terrance Dicks recalls that he had used the line in a script, and Pertwee approached him about the line. Dicks had feared that he would have to remove it, but Pertwee stated that he liked it, and wanted to see it more often. Dicks obliged.
The Third Doctor only said the full phrase "reverse the polarity of the neutron flow" twice on screen – in The Sea Devils (1972) and the 20th Anniversary special The Five Doctors (1983). Pertwee used the phrase when he acted in the stage play Doctor Who - The Ultimate Adventure in 1989; When Colin Baker took over the role in the play he amended the line to "Reverse the linearity of the proton flow." In the radio play The Paradise of Death the Brigadier asks "Reverse the polarity of the neutron flow?" and the Doctor proceeds to explain that the phrase is meaningless. On other occasions on screen, the Third Doctor "reversed the polarity" but not of neutrons.
The full phrase was used in several Target novelisations. It was subsequently used by the Fourth Doctor (in City of Death) and the Fifth Doctor (in Castrovalva and Mawdryn Undead). Together with The Five Doctors this resulted in the phrase being used as a nostalgic reference. In the Tenth Doctor episode "The Lazarus Experiment" the Doctor, while hiding in Lazarus' machine, comments that it had taken him too long to reverse the polarity due to being out of practice; the Tenth Doctor uses the full phrase in "Music of the Spheres". During the episode "The Almost People", a clone of the Eleventh Doctor speaks the phrase while reliving the memories of all his predecessors. He goes on to conflate it with his regeneration-spanning love of jelly babies, remarking that they need to "reverse the jelly baby of the neutron flow".
Title sequence and logo 
The original title sequence for the Third Doctor's seasons was an extension of the "howlround" kaleidoscopic patterns used for the previous Doctors, incorporating Pertwee's face and adding colour to showcase Doctor Who being broadcast in colour for the first time. In the Third Doctor's final season, a new title sequence was introduced, designed by Bernard Lodge. Partially inspired by the slit-scan hyperspace sequence in Stanley Kubrick's 2001: A Space Odyssey, one portion of this sequence is the prototype for the classic time tunnel sequence of the Fourth Doctor's seasons. The Third Doctor's final season also introduced the equally classic diamond logo which would remain in use until 1980.
The series logo introduced in 1970 and used for the first four seasons of Pertwee's tenure would later be used again, in modified form, as the logo for the 1996 Doctor Who TV movie. This version subsequently became the official Doctor Who logo, most notably with regards to products connected to the Eighth Doctor. With the introduction of a new official series logo in 2005, the 1996 logo continued to be used by Big Finish Productions as the logo for all pre-2005 series material including books and audio dramas, and by the BBC on DVD releases of episodes from the 1963-89 series, books and audio.
Later appearances 
The Third Doctor would appear once more officially in the 20th anniversary special The Five Doctors, broadcast in 1983. Before his death, Pertwee played the role on screen one last time in the 1993 charity special Dimensions in Time.
Other mentions 
Visions of the Third Doctor appear in The Brain of Morbius, Mawdryn Undead and Resurrection of the Daleks. A portrait of him is seen in Timelash. A brief clip of the Third Doctor taken from Terror of the Autons appears in "The Next Doctor", another appears in The Sarah Jane Adventures story The Mad Woman in the Attic as a flashback, and visions appear in "The Eleventh Hour", "The Lodger", and The Sarah Jane Adventures story Death of the Doctor. He was also seen in the episode "The Name of the Doctor" riding Bessie (taken from The Five Doctors).
Other appearances 
|Wikiquote has a collection of quotations related to: Third Doctor|
- Third Doctor on TARDIS Data Core, an external wiki
- The Third Doctor on the BBC's Doctor Who website
- Third Doctor Gallery
- Third Doctor's theme music QuickTime file
- Third Doctor title sequence
- Interview with Jon Pertwee conducted in March 1996
|Companions of the Third Doctor|
|Season||Season 7||Season 8||Season 9||Season 10||Season 11|
|Companion||Liz||Jo||Sarah Jane →|