VOICE of K-9:
JOHN LEESON AND DAVID BRIERLY
K-9 MK I:
FOURTH DOCTOR: TOM BAKER
FIFTEENTH SEASON
4T. The Invisible Enemy
4X. Image of the Fendahl
4W. The Sunmakers
4Y. Underworld
4Z. The Invasion of Time
K-9 MK II:
FOURTH DOCTOR: TOM BAKER
SIXTEENTH SEASON
5A. The Ribos Operation
5B. The Pirate Planet
5C. The Stones of Blood
5D. The Androids of Tara
5E. The Power of Kroll
5F. The Armageddon Factor
SEVENTEENTH SEASON
5J. Destiny of the Daleks
5H. City of Death
5G. The Creature From the Pit
5K. Nightmare of Eden
5L. The Horns of Nimon
EIGHTEENTH SEASON
5N. The Leisure Hive
5Q. Meglos
5R. Full Circle
5P. State of Decay
5S. Warrior's Gate
K-9 MK III:
FIFTH DOCTOR: PETER DAVISON
TWENTIETH SEASON
6K. The Five Doctors
TENTH DOCTOR: DAVID TENNANT
TWENTY-NINTH SEASON
School Reunion
K-9 MK IV:
TENTH DOCTOR: DAVID TENNANT
TWENTY-NINTH SEASON
School Reunion
THIRTY-FIRST SEASON
The Stolen Earth
2) Journey's End