As of the 2014 episode "Dark Water", it was revealed that the Master had become a female incarnation or "Time Lady", going by the name of "Missy" (short for Mistress, the feminine equivalent of "Master").
Fra og med 2014 episoden Dark Water, blev det afsløret at Mesteren var blevet en kvindelig inkarnation eller "Tidsfrue", der går ved navnet "Missy" (som betyder Mesterinde, den feminine svaren til "Mester").