. . . . . . . . . "The Master / Colonel Masters / Professor Emil Keller / Martin Jurgens / Reverend Victor Magister / Professor Carl Thascalos / Brigadier Lethbridge-Stewart / The Commissioner of Sirius IV / McMaster / The Melkur / Duke Dominus / Estro / Inspector LeMaitre / Geoffrey Thynne / Senator Szef / The Doctor / Dr. Aloysius Fischer / Mwalimu / Charcoal Face / Frey / Inspector Efendi / The Renegade"@en . "Koschei"@en . . . . "Thirteenth Master (Earth-12)"@en . . . . . "Gallifreyan"@en .