Conversation so far:
Who were some of The Master (Doctor Who)'s companions?
Kamelion.
Was that a male or female?
CANNOTANSWER.
Did he have any other companions?
Chantho plays a similar companion role to the Professor Yana persona.
Chantho states that she has been with him for 17 years as a "devoted assistant.
Was he married?
"The Sound of Drums", the Master, as Harold Saxon, is married to Lucy Saxon, to whom he refers at one point as his "faithful companion".

Question: Did he have any other companions?
Self-contained rewrite: Did Doctor Who have any other companions other than Lucy Saxon?