THIRD DOCTOR - JON PERTWEE

THE THIRD DOCTOR – Portrayed by Jon Pertwee

The Third Doctor as he first appeared in 'Spearhead from Space'

First Appearance: 

• SPEARHEAD FROM SPACE – 3 January 1970

Final Appearance:

• PLANET OF THE SPIDERS – 8 June 1974

Notable Returns:

• THE FIVE DOCTORS – 23 November 1983

Companions:

• Liz Shaw
• Jo Grant
• Sarah Jane Smith

First Encounters:

• The Nestene Consciousness; SPEARHEAD FROM SPACE – 3-24 January 1970
• The Master; TERROR OF THE AUTONS – 2-23 January 1971
• The Silurians; DOCTOR WHO AND THE SILURIANS - 31 January - 14 March 1970
• Sontarans; THE TIME WARRIOR – 15 December 1973-5 January 1974

Aliases:

• Doctor John Smith (SPEARHEAD FROM SPACE onwards)

Dalek Encounters:

• DAY OF THE DALEKS
• FRONTIER IN SPACE
• PLANET OF THE DALEKS
• DEATH TO THE DALEKS

Ice Warrior Encounters:

• THE CURSE OF PELADON
• THE MONSTER OF PELADON

Brigadier Encounters:

• SPEARHEAD FROM SPACE
• DOCTOR WHO AND THE SILURIANS
• THE AMBASSADORS OF DEATH
• INFERNO
• TERROR OF THE AUTONS
• THE MIND OF EVIL
• COLONY IN SPACE
• THE DAEMONS
• DAY OF THE DALEKS
• THE TIME MONSTER
• THE THREE DOCTORS
• THE GREEN DEATH
• THE TIME WARRIOR
• INVASION OF THE DINOSAURS
• PLANET OF THE SPIDERS

The Master Encounters:

• TERROR OF THE AUTONS
• THE MIND OF EVIL
• THE CLAWS OF AXOS
• COLONY IN SPACE
• THE DAEMONS
• THE SEA DEVILS
• THE TIME MONSTER
• FRONTIER IN SPACE

UNIT Encounters:

• SPEARHEAD FROM SPACE
• DOCTOR WHO AND THE SILURIANS
• THE AMBASSADORS OF DEATH
• INFERNO
• TERROR OF THE AUTONS
• THE MIND OF EVIL
• COLONY IN SPACE
• THE DAEMONS
• DAY OF THE DALEKS
• THE TIME MONSTER
• THE THREE DOCTORS
• THE GREEN DEATH
• THE TIME WARRIOR
• INVASION OF THE DINOSAURS
• PLANET OF THE SPIDERS

Given Age: 

• None given. 'Several thousand years' as a scientist in DOCTOR WHO AND THE SILURIANS and THE MIND OF EVIL

Cause of Regeneration: 

• Bombarded by radiation from the Cave of the Great One, and then lost in the vortex for an unspecified time. Heavily implied that he actually dies, before Time Lord mentor, K'anpo, gives the Doctor's regeneration a little 'push'. – PLANET OF THE SPIDERS

The Third Doctor as he last appeared in 'The Five Doctors'

THE SECOND DOCTOR - PATRICK TROUGHTON

THE SECOND DOCTOR – Portrayed by Patrick Troughton

The Second Doctor as first seen in 'The Power of the Daleks'

First Appearance: 

• THE POWER OF THE DALEKS – 5 November 1966.

Final Appearance: 

• THE WAR GAMES – 21 June 1969.

Notable Returns: 

• THE THREE DOCTORS – 30 December 1972-20 January 1973
• THE FIVE DOCTORS – 23 November 1983
• THE TWO DOCTORS – 16 February-2 March 1985.

Companions: 

• Ben Jackson
• Polly
• Jamie McCrimmon
• Victoria Waterfield
• Zoe Heriot.

First Encounters:

• The Macra; THE MACRA TERROR – 11 March-1 April 1967
• The Great Intelligence; THE ABOMINABLE SNOWMEN – 30 September-4 November 1967
• The Ice Warriors; THE ICE WARRIORS – 11 November-16 December 1967
• Alistair Lethbridge-Stewart; THE WEB OF FEAR – 3 February-9 March 1968
• Gallifrey; THE WAR GAMES – 19 April-21 June 1969

Doppelgangers: 

• Salamander (THE ENEMY OF THE WORLD).

Aliases:

• Doctor von Wer (THE HIGHLANDERS)
• John Smith (THE WHEEL IN SPACE).

Dalek Encounters:

• THE POWER OF THE DALEKS
• THE EVIL OF THE DALEKS.

Cybermen Encounters:

• THE MOONBASE
• THE TOMB OF THE CYBERMEN
• THE WHEEL IN SPACE
• THE INVASION.

Ice Warrior Encounters:

• THE ICE WARRIORS
• THE SEEDS OF DEATH.

Brigadier Encounters:

• THE WEB OF FEAR
• THE INVASION.

Great Intelligence Encounters:

• THE ABOMINABLE SNOWMEN
• THE WEB OF FEAR.

UNIT Encounters:

• THE INVASION

Given Age: 

• 450 – THE TOMB OF THE CYBERMEN.

Cause of Regeneration: 

• Forcibly regenerated by the Time Lords as punishment – THE WAR GAMES.

The Second Doctor as last seen in 'The Two Doctors'