The Master (Scream of the Shalka)

This incarnation of the Master travelled with the Doctor and had an android body.

Biography
The circumstances behind the creation of this incarnation of the Master remain undisclosed, however, he noted that he was less than happy with this arrangement, saying that it was "an offer I was foolish enough to accept". He also said that he "was of aid to the Doctor during the events that damaged him". This implies that the Doctor helped create him. His android body was limited to functioning within the Doctor's TARDIS. Therefore he could not leave it and, in effect, he had become the Doctor's companion. (WC: Scream of the Shalka)

The Master was later connected to the TARDIS' telepathic circuits by the Doctor in order to destory a psychic vampire by feeding it with the Master's pure evil memories and personality. (WC: The Feast of the Stone)

Personality
This Master retained his charm and his wit, together with his hypnotic abilities. He attempted without success to hypnotise the Doctor's latest companion Alison Cheney, but was interrupted by the Doctor. (WC: Scream of the Shalka)

Behind the scenes

 * Derek Jacobi, who voiced this version of the Master would also later play Professor Yana, unwittingly, a human incarnation of the Master in DW: Utopia.