List of incarnations of the Master

The following is a list of incarnations and manifestations of the Master. For completion and usefulness' sake, incarnations of the Master, valid or invalid, are gathered here.

Mainstream

Original regeneration cycle

Early life

• First Monk (TV: The Time Meddler, PROSE: CIA File Extracts)
• The War Chief (TV: The War Games, PROSE: Doctor Who and the Doomsday Weapon)
• Magnus (COMIC: Flashback)
• Koschei (Rebel Rebel) (PROSE: Rebel Rebel)
• The Master (AUDIO: The Destination Wars)

Undisputed

• The Master (TV: Terror of the Autons)
• Decayed Master (TV: The Deadly Assassin)

Between cycles

• Tremas Master (TV: The Keeper of Traken)
  • Decayed Master (AUDIO: Dust Breeding)
• Old Master (PROSE: First Frontier, TV: Doctor Who)
• Bruce Master (TV: Doctor Who)
• The Master (COMIC: The Fallen)
  • Decayed Master (AUDIO: Mastermind)

Time War regeneration cycle

• Reborn Master (AUDIO: Dominion)
• War Master (TV: Utopia)
  • The Master (COMIC: The Then and the Now)
• Saxon Master (TV: Utopia)
• Missy (TV: Deep Breath)
  • The Lumiat (TV: The Lumiat)
• Spy Master (TV: Spyfall)

Other realities

• Koschei (PROSE: The Face of the Enemy)
• The Master of Barusa's universe (PROSE: The Chronicles of Doctor Who?)
• The Master (Exile) (AUDIO: Exile)
• Previous Master (AUDIO: Sympathy for the Devil)
• Unbound Master (AUDIO: Sympathy for the Devil)
• The Master of the Warrior's universe (AUDIO: Aftershocks)

Clones and duplicates of the Master

• The Tremas Master's Auton (GAME: Destiny of the Doctors)

Other

Some incarnations of the Master offer little to no explanation to their placement in the timeline, or are otherwise ambiguous in some sense as to their relationship with the mainstream line-up.

• The Master (PROSE: The Creation of Camelot)
• The Master (TV: The Curse of Fatal Death)
• The Master (NOTVALID: Scream of the Shalka)
• The entropy wave (AUDIO: Masterful)