Borusa

A former teacher of the Doctor’s, Borusa was first a Time Lord Cardinal before rising in the political ranks to Chancellor.

Podcast C130 The Five Doctors The Fifth Doctor > The First Doctor > The Fourth Doctor > The Second Doctor > The Third Doctor > Dr Elizabeth "Liz" Shaw > Jamie McCrimmon > K-9 > Sarah-Jane Smith > Susan Foreman > Tegan Jovanka > Vislor Turlough > Zoe Heriot > Cyber-Leader > Cybermen > Daleks > Raston Warrior Robot > Yeti > Alistair Gordon Lethbridge-Stewart > Borusa > Captain Mike Yates > U.N.I.T. > Rassilon > The Master

Four-and-a-bit Doctors battle Cybers, a chap in silver spandex and a Time Lord conspiracy in the 20th Anniversary Special

Podcast C097 The Invasion of Time The Fourth Doctor > K-9 > Leela > Carnivorous Plants > Shobogan > Sontarans > Time Lords > Vardans > Borusa

Doc gets crowned president, Gallifrey gets invaded twice, and Leela and K-9 get no goodbye

Podcast C088 The Deadly Assassin The Fourth Doctor > Time Lords > Borusa > The Master

Gallifreyan CIA Agents force The Doctor to enter The Matrix where Skeletor is ready to ambush him in a quarry