The Master's aliases

Like the Doctor, the renegade formerly known as Koschei has employed a number of aliases in the course of his career. However, while the Doctor tends to use false names on a fairly ad hoc basis in order to avoid awkward questions, the Master usually adopts them in order to further whatever scheme he is currently embarked upon.

The Master
The Master has effectively discarded his former name. He and the Doctor refer to each other by their titles as a matter of course.

Colonel Masters
Used when infiltrating Rex Farrell's plastics company. (DW: Terror of the Autons)

Reverend Magister
Used when infiltrating Devil's End. Magister is Latin for Master. (DW: The Daemons)

Professor Thascales
Used when infiltrating the Newton Institute. Thascales is Greek for Master. (DW: The Time Monster)

'Duke' Dominus
Used when impersonating a gangster in 1930s Chicago. Dominus is also Latin for Master. (ST: The Duke of Dominoes)

Sir Gilles Estram
Used when attempting to avert the signing of the Magna Carta. Estram is an anagram of Master. (DW: The King's Demons)

Mr. Seta
Used aboard the starship Gallery. (BFA: Dust Breeding)

Dr Emil Keller
Used when assuming the identity of the creator of the Keller Machine. (DW: The Mind of Evil)


 * In an alternate timeline the Master used this identity when working for the government of China, during which time he was known as Ke Le. (DWU: Sympathy for the Devil.)

The Adjudicator
Used when impersonating an Adjudicator (strangely enough).