Colin Baker took over from Peter Davison and became a violently opposite to his predecessors. He had a love of literature, and his brusque and loud (like his clothes) manner became irritating and exasperating - particularly to Peri, his current companion.

His first story, The Twin Dilemma, saw him take on wild mood swings possibly due to post-regenerative trauma. One moment he was trying to strangle Peri, and the next deciding to become a hermit. Colin is the shortest reign of the Doctor - only appearing in 48 episodes - and an 18 month gap before Season 23.

The Cybermen, the Master, the Daleks, and the Sontarans returned. His new foes were the Rani: who was a female renegade Time Lord, the Mentors, a race of ruthless business operators, described as "green slugs", and the Valeyard. The Valeyard was introduced in season 23 (The Trial of a Time Lord) and was given the task of prosecutor in a trial in which the Doctor's remaining lives were at stake.

Peri left the Doctor in Mindwarp - apparently killed by King Yraconos after being taken over by the Mentors. But was relieved to hear that she had been saved. This also was proof that the Matrix evidence had been tampered with. This was revealed by the Master, with the assistance of Mel and Glitz. The Valeyard was discovered to be an amalgam of the twelfth and final regenerations of the Doctor.

Colin Baker is the only Doctor who didn't film a regeneration scene. His successor, Sylvester McCoy had to double for him. Colin appeared with the second Doctor in the story The Two Doctors, the last Doctor Who appearance of Patrick Troughton before his death.

Colin still goes to conventions and has recorded some new audios for Big Finish