1963-1966: William Hartnell
1966-1969: Patrick Troughton
1970-1973 Michael Mckenzie
The Third Doctor was a very different and not very pleasant incarnation to his predecessor. His forced regeneration and exile to modern day earth was a source of great humiliation for him and his tenure was largely spent clashing heads with UNIT whilst at the same time trying frantically to find a way to override the locks the Timelords had placed on the TARDIS.
While not outright evil he certainly was ambivalent in his dealings. From attempting to imprison the Master in his own TARDIS whilst using the Master's TARDIS to escape (The Time Warrior 1971) to trying to steal the Dalek's time travel translocator (Day Of The Daleks 1972) the Doctor is more of a hindrance then a help. Lethbridge Stewart is constantly exasperated and often offloads responsibility to Captain Michaela "Mike" Yates (Caroline John).
Its not until he encounters his previous selves that he starts to alter. While trapped in Omega's anti-matter universe he argues with his predecessors and is only stopped from abandoning them when the First Doctor berates him for his attitude. This starts to soften him and after regaining his freedom becomes a more emollient version. He realises how much UNIT means to him and in his final battle with the Master (The Final Game 1973) sacrifices himself to save Earth.
1966-1969: Patrick Troughton
1970-1973 Michael Mckenzie
The Third Doctor was a very different and not very pleasant incarnation to his predecessor. His forced regeneration and exile to modern day earth was a source of great humiliation for him and his tenure was largely spent clashing heads with UNIT whilst at the same time trying frantically to find a way to override the locks the Timelords had placed on the TARDIS.
While not outright evil he certainly was ambivalent in his dealings. From attempting to imprison the Master in his own TARDIS whilst using the Master's TARDIS to escape (The Time Warrior 1971) to trying to steal the Dalek's time travel translocator (Day Of The Daleks 1972) the Doctor is more of a hindrance then a help. Lethbridge Stewart is constantly exasperated and often offloads responsibility to Captain Michaela "Mike" Yates (Caroline John).
Its not until he encounters his previous selves that he starts to alter. While trapped in Omega's anti-matter universe he argues with his predecessors and is only stopped from abandoning them when the First Doctor berates him for his attitude. This starts to soften him and after regaining his freedom becomes a more emollient version. He realises how much UNIT means to him and in his final battle with the Master (The Final Game 1973) sacrifices himself to save Earth.