Changes

The fifth Doctor became something of a vulnerable character, which was a conscious decision by the production team (led by John Nathan-Turner) to remove the aura of invincibility that they had felt was becoming part of the Doctor's characterization with Tom Baker. Shown to be a keen cricket fan, the Doctor was arguably more human than any of his predecessors and often relied more on his companions to assist throughout his missions.  [[Peter Davison]] was the youngest actor to be cast as the Doctor, at the age of 29, until the casting of [[Matt Smith]], who was 26, when he was cast as the Eleventh Doctor in 2009.

The fifth Doctor became something of a vulnerable character, which was a conscious decision by the production team (led by John Nathan-Turner) to remove the aura of invincibility that they had felt was becoming part of the Doctor's characterization with Tom Baker. Shown to be a keen cricket fan, the Doctor was arguably more human than any of his predecessors and often relied more on his companions to assist throughout his missions.  [[Peter Davison]] was the youngest actor to be cast as the Doctor, at the age of 29, until the casting of [[Matt Smith]], who was 26, when he was cast as the Eleventh Doctor in 2009.

===[[Colin Baker]] (1984-1986)===

===Sixth Doctor (1984-1986)===

The Sixth Doctor was premised around being the antithesis of his predecessor, with his garish and color-mismatched costume reflecting the vast contrast with the mild-mannered fifth Doctor. In terms of characterization, the Doctor became something of an unstable character, often violently responding to people and events around him.  The Sixth Doctor is the first Doctor to be played by two different actors.  In ''The Time and the Rani,'' he was briefly played by Sylvester McCoy, just long enough for the regeneration in to his next incarnation, as Colin Baker had declined to return for a regeneration sequence, making him the first actor to play the Doctor to not film a regeneration.

The Sixth Doctor was premised around being the antithesis of his predecessor, with his garish and color-mismatched costume reflecting the vast contrast with the mild-mannered fifth Doctor. In terms of characterization, the Doctor became something of an unstable character, often violently responding to people and events around him.  The Sixth Doctor is the first Doctor to be played by two different actors.  In ''The Time and the Rani,'' he was briefly played by Sylvester McCoy, just long enough for the regeneration in to his next incarnation, as [[Colin Baker]] had declined to return for a regeneration sequence, making him the first actor to play the Doctor to not film a regeneration.

===[[Sylvester McCoy]] (1987-1989)===

===[[Sylvester McCoy]] (1987-1989)===