The Master

"The Master" — known in female form as "Missy", short for "Mistress", and at times by various other aliases — was a renegade Time Lord, originally a friend and long an opponent of the Doctor.

Though they had been friends from childhood (TV: The End of Time, Death in Heaven) and schoolmates at the Academy (TV: The Sea Devils, The Time Monster, The Five Doctors) before falling out, the Master developed an intense hatred for and often sought to kill the Doctor, who came to regard the Master as his arch-enemy. (TV: The Deadly Assassin, Castrovalva, Time-Flight, Doctor Who) Despite this enmity, however, the Master and the Doctor would on occasion act as allies. (TV: The Claws of Axos, The Five Doctors, The End of Time, The Magician's Apprentice/The Witch's Familiar)

The Master's diabolical madness was at least partially the result of a genuine malady in the form of a never-ending drumming sound that had been retroactively implanted inside his head by Rassilon and the High Council on the final day of the Last Great Time War to further their own goals. (TV: The End of Time)

Dealings with the Second Doctor
After the Doctor fled Gallifrey in a stolen TARDIS, the Master left Gallifrey on the same day (COMIC: The Glorious Dead) in a Type-45 TARDIS, (PROSE: The Dark Path) that he had also stolen. (COMIC: The Glorious Dead) However, his unstable obsession with order prompted the Time Lords to plant the Time Lady Ailla as a spy to monitor his actions. She posed as a human so Koschei (as the Master had now started calling himself) would take her on as his companion during a stopover in the 28th century.

Koschei caught up with the Second Doctor at the Darkheart colony in the early years of the Galactic Federation. The temptation posed by the Darkheart device proved too much for Koschei, and the revelation that Ailla was a spy killed the last traces of good in him, and he became the Master. After the Doctor trapped him in a black hole, the Master swore that he would take revenge. (PROSE: The Dark Path)

Escaping the black hole, the Master penetrated Gallifrey, and gained access to the Matrix via a console in the old Capitol. This gave him a back door into the Matrix, which he used to collect classified information for his many devious schemes, (PROSE: The Quantum Archangel) including the Time Lords' files on the Doomsday Weapon. (TV: Colony in Space) According to one account, the Master learnt about the Silurians through information stolen from the Time Lords' files. (TV: The Sea Devils) Another account stated he learnt about the Silurians from Liz Shaw while on Earth. (PROSE: Reconnaissance)

The Master then put his TARDIS in orbit of the homeworld of the Archons and made a deal with them that would result in the Archons acquiring the Doctor's TARDIS for themselves. Posing as a Professor Thascalos, the Master gave the Necronomicon to the Doctor's companion Jamie McCrimmon, so that Jamie would give the book to the Doctor and lure the TARDIS to the Archon homeworld. (PROSE: The Nameless City)

Early times on Earth
The Master was imprisoned on Shada by the Time Lords at the time when the Doctor was exiled to Earth. However, the Time Lords decided to keep the Doctor busy whilst he was trapped on Earth by releasing the Master. (PROSE: Prisoners of the Sun)

The Master was present at the first Auton invasion of Earth, and heard about Channing's attempt to capture the Third Doctor. He contacted journalist James Stevens by phone, whose article he had read in the Daily Chronicle, and told him about the near-kidnapping. He called Stevens again during the Silurian attacks on Wenley Moor, informing Stevens that Edward Masters had been the first to die from the plague sweeping London. (PROSE: Who Killed Kennedy)

Under the alias "Emil Keller", the Master captured a psychic parasite and trapped it within the Keller Machine, and spent many months establishing "Keller" and the machine's credentials. (TV: The Mind of Evil)

Shortly after the Inferno Project incident, the Master once more contacted James Stevens, this time to check up on his work on his UNIT article. He promptly hung up when Stevens mentioned C19 and the Glasshouse. (PROSE: Who Killed Kennedy)

According to one account, the Master first infiltrated the headquarters of UNIT while the Brigadier and the Doctor had gone to meet with government officials. He hypnotised the Doctor's assistant, Liz Shaw, and, through her, learnt of the failed Nestene invasion and the awakening of the Silurians. This inspired him to ally himself with the Nestene and to locate more Silurian colonies. (PROSE: Reconnaissance) Another account stated he learnt about the Silurians from the Time Lords' files. (TV: The Sea Devils)

Becoming a threat
The Master appeared at the International Circus, his TARDIS in the form of a horse box. He hypnotised the circus troupe and plastic factory manager Rex Farrel to obey his orders as part of his plan to assist the Nestenes in their latest bid to conquer Earth. A Time Lord emissary alerted the Doctor to his rival's presence on the planet, and before the radio telescope could be used to bring the Nestene invasion force to Earth, the Doctor convinced the Master that the Nestenes would not distinguish between the Master and anyone else in their takeover, and the two worked together to fling the Nestenes back into space by "chang[ing] the polarity" whilst the radio telescope's transfer shift was still open. Afterwards, the Master fled. The Doctor, however, had already taken his dematerialisation circuit, preventing the Master from leaving Earth in his TARDIS. (TV: Terror of the Autons)

The Master returned again, posing as the scientist who had "developed" the Keller Machine. He used prisoners as a plan to hijack the Thunderbolt, a missile containing nerve gas and use it to destroy the world peace conference, which would trigger a nuclear war. The Doctor stopped him and destroyed the missile, but later discovered he had lost the Master's dematerialisation circuit. Shortly after, the Master telephoned to let it be known that he had found the circuit and was free now to come and go as he pleased, while the Doctor had to remain in exile. (TV: The Mind of Evil)

Shortly after the Master regained control over his TARDIS, he tried to gain control of a cult so he could harness the power of the Immortals. He convinced the real cult leader, Hadley, that he could serve the cult loyally, by supplying them with sarg. Unfortunately for the Master, Hadley only intended to keep the Master alive while he was still useful. With no other options, the Master formed a temporary truce with the Doctor to stop Hades' plan. After the crisis was resolved, the Doctor allowed the Master to depart unmolested in the name of their temporary truce. (PROSE: Deadly Reunion)

The Master brought Axos to Earth, hoping to ally himself with them. Instead, he became the prisoner of Axos, and only escaped by saying that he would help it. The Doctor tricked the Master into thinking he was going to betray Earth. Instead, he trapped the Master with Axos in a time loop. (TV: The Claws of Axos)

Posing as an Adjudicator, the Master travelled to a human colony on the planet Uxarieus in the year 2472. There, the Time Lord records indicated he would find the Doomsday Weapon created by a near-extinct native species. Once again the Doctor defeated his plans and the weapon was destroyed. (TV: Colony in Space)

In the Wiltshire village of Devil's End, the Master summoned the ancient Dæmon Azal, but he failed to understand the power and control that was necessary following summoning him. Following Azal's confrontation with Jo Grant's selflessness, he was captured by UNIT following a failed attempt to escape in the Doctor's car, Bessie. (TV: The Dæmons)

In custody
Prior to his trial, the Master was sent to Stangmoor Prison. During his captivity, an army of hypnotised salespeople stormed the facility and attempted to rescue him, but the ploy failed and the Master was sent to another secure holding facility. Meanwhile, the Doctor and Jo were trapped in an extra-universal prison by the Freedom Corporation, so the Brigadier was forced to strike a deal with the Master to save them. But the Master double-crossed him and used time travel technology to regress the Earth backwards in time. However, with help from the Time Lords, the Doctor was freed and was able to stop the Master's plan and restore everything to normal. (PROSE: Freedom)

The government used the Master as a scapegoat for all the alien attacks which had recently occurred. (PROSE: Who Killed Kennedy)

The Master was held at Aylesbury Grange Detention Centre. Demanding the Doctor visit him, he engaged the Doctor in conversation, insisting he had changed. However, the Doctor refused to believe him, and the Master reluctantly revealed that he had drawn the Doctor to the facility as part of an escape attempt, and that the Doctor was speaking to a hologram. The Master nearly escaped, but was stopped by UNIT soldiers accompanying the Doctor, who revealed he had been a hologram as well. (COMIC: The Man in the Ion Mask)

In another escape attempt, the Master created a device that switched his mind with the Doctor's. He went to the Doctor's TARDIS, where he learned that the Time Lords had made the TARDIS ineffective to the Doctor's piloting. Before returning to his own body, the Master, as the Doctor, asked the Brigadier to move the Master to a new holding facility with a good view, and also encouraged Mike Yates to ask Jo Grant out on a date. (PROSE: The Switching)

While in custody, with the Doctor on Peladon, (TV: The Curse of Peladon) the Master collaborated with UNIT to prevent an invasion by a fascist version of Earth, travelling with the Brigadier, Ian and Barbara Chesterton to the alternate universe and encountering Koschei, the alternate version of himself. Koschei was imprisoned and tortured by order of the Leader of the Republic of Great Britain, the alternate version of the Doctor. The Master killed his other self, claiming it was an act of mercy. Before he was imprisoned by UNIT again, the Master hid his TARDIS back in the church crypt in Devil's End. (PROSE: The Face of the Enemy)

The Master was imprisoned inside a castle prison on Fortress Island as the only prisoner. The Doctor believed he would be in this prison "forever". The Master convinced his jailer, Colonel George Trenchard, to help him steal electronic parts from HMS Seaspite, telling Trenchard that this was intended as a lure for enemy agents. With these parts, the Master instead made contact with the reptilian Sea Devils, an aquatic species similar to the land-dwelling Silurians, and planned to cause a war between humans and Sea Devils, making the Sea Devils rulers of Earth again. Because the reactivation machinery of the Sea Devils' hibernation units deterirorated during millions of years of hibernation, the Master saw it necessary to construct a sonar device to awaken the remaining reptiles. The Master captured the Doctor, and forced him to help create this device, but to prevent the device from reactivating further Sea Devil bases and stop the war, the Doctor blew up the Sea Devil base by reversing the device's polarity, creating a massive reverse feedback. The Master escaped in a hovercraft when the officer guarding him, CPO Myers, was hypnotised and framed as the Master's corpse, (TV: The Sea Devils) and the Master returned to the church crypt in Devil's End to retrieve his TARDIS. (PROSE: The Eight Doctors)

At large again
Some time after his escape, the Master took control of the Glasshouse, a facility for traumatised UNIT soldiers, and in particular Private Francis Cleary. He planned to use a time ring to have Cleary go to 1963 to prevent the Kennedy assassination, thereby altering Earth's history to make it more vulnerable to invasion. The plan failed. (PROSE: Who Killed Kennedy)

Posing as "Professor Carl Thascalos", the Master constructed a machine known as TOMTIT at Cambridge's Newton Institute to summon the ancient chronovore Kronos, whom he wished to control. He hypnotised the institute's director, Dr Charles Percival, but accidentally killed him by releasing Kronos from the Crystal of Kronos. The Master summoned the Atlantean priest Krasis for instructions on how to control Kronos, while meddling with the flow of time to obstruct the Doctor from getting in his way.

After knocking out Sergeant Benton, the Master retreated to his TARDIS, but the Doctor tried to trap him in a time lock using his own TARDIS, accidentally creating a space loop when both TARDISes were materialised within the other. When the TARDISes were separated during their negotiations, the Master ejected the Doctor into space, but the Doctor survived by using the telepathic circuit of his TARDIS to help Jo return him to safety.

The Master travelled to ancient Atlantis and failed to hypnotise King Dalios, who easily resisted his influence. Confronting the Doctor there, the Master tried to manipulate Queen Galleia into betraying her husband, since she had taken a romantic liking in his charm compared to Dalios' often dull personality. Galleia, however, was enraged when the Master caused Dalios to die in the coup they staged in Atlantis. Before he was arrested, the Master commanded Krasis to use the Crystal of Kronos housed in Atlantis, and brought forth Kronos, who destroyed the entire civilisation.

Fleeing Atlantis with Jo as his hostage, and with Kronos under his control, the Master was in a position to cast destruction unto the entire cosmos, however, the Doctor threatened to time ram the Master's TARDIS with his own, which would take everyone's lives in the process if he did not give up his plans for chaos. The Master did not believe the Doctor would earnestly carry out his warning, because he knew endangering Jo's life was not an option for him. In response to the Doctor's hesitation, Jo tried to complete the time ram before the Master could release Kronos again. Instead, Kronos spared everyone from death, and captured the Master for the crime of trying to control it, but allowed him to go free at the request of the Doctor. (TV: The Time Monster)

Having had enough of Earth, and other plans to set in motion on Skaro, the Master employed the assistance of a being called Verdigris to impersonate him. (PROSE: Verdigris) On Skaro, the Master forged an alliance with the Daleks, acting as their agent to provoke warfare between the Earth Empire and the Draconian Empire in the 26th century. To achieve this, he employed a force of Ogrons who, through the use of hypnosound, made themselves appear human or Draconian, thus provoking the other side. When the Doctor revealed the true perpetrators, the plot was abandoned. (TV: Frontier in Space)

Returning to Earth, the Master set up a talent show called Make a Star, based on the anagram AKA Master, which he used to disrupt the timeline by making the contestants cover songs that weren't yet written. He intended to use the relatively minor disruption caused to allow him to take control of Earth, but this plan was foiled by the Doctor. (PROSE: Hidden Talent)

On another occasion, the Master made a deal with the Odobenidans to help them invade Earth, but accidentally trapped both them and himself in a time loop whilst undertaking some temporal mechanics on their behalf. He was trapped in the time loop beneath Greece for months. The Doctor, sent to Greece by the Time Lords to deal with the time loop, released the Master and foiled his plan again. (PROSE: The Seismologist's Story) The Master planned to release a fog in Tadcaster by using Sarkan mist-flowers to generate a fog that would spread engulf the Earth in a dense fog. Attempting to catch up with the Master, the Doctor commandeered a pier train that crashed into the Master and the mist-flowers, sending all of them into the ocean, where the flowers were destroyed and the Master disappeared. (COMIC: Fogbound)

Reappearing again, the Master took control of the Brigadier's mind, and instructed him to kill the Doctor. However, the Brigadier attacked the Master, but he escaped, restoring the Brigadier to his senses. (PROSE: Smash Hit)

The Master travelled to the Land of Fiction, where he intended to steal an advanced piece of technology from the Land, and defeated Professor Moriarty. (COMIC: Character Assassin)

The Master used time-displaced Scottish warriors to seize a nuclear submarine and threaten Britain with obliteration if he wasn't given the Doctor's TARDIS; he ended up temporarily trapped in the 18th century. (COMIC: The Glen of Sleeping) He also worked with the Gaderene race to conquer Earth. (PROSE: Last of the Gaderene)

For a short while, the Master adopted the identity of "Duke Dominus", a gangster on early 20th century Earth, but his plan on was foiled by the Fourth Doctor without either the Doctor or the Master realising the others' involvement. (PROSE: The Duke of Dominoes)

He attended Bonjaxx's birthday party at Maruthea. When a fight broke out, Ria threw a chair at him. (COMIC: Party Animals)

According to one account, the Master went under cover on Earth following the 22nd century Dalek invasion and killed David Campbell, the husband of the Doctor's granddaughter Susan. After being defeated by the Eighth Doctor, he fled in his TARDIS, taking Susan with him as a hostage, unaware of her Gallifreyan heritage. As his TARDIS materialised on Tersurus, she used his TARDIS's telepathic circuits to attack him, forcing him out onto the planet's surface. She used his own Tissue Compression Eliminator against him while he was holding the Dalek's matter transmuter. The blast severely deformed and nearly killed him. Susan departed in his TARDIS; this brief materialisation, however, alerted the Time Lords to the Master's presence on Tersurus.

Investigating the materialisation of an unauthorised TARDIS, the Time Lord Chancellor Goth arrived on Tersurus, where he found the Master in a wasted condition — that of a decaying animated corpse. The Master sensed that Goth wished for power and offered it to him, whilst Goth, seeing the Master as a dying "creature", thought he could control the Master for his own means. (PROSE: Legacy of the Daleks)

Alternative timelines
The Sild captured many different alternate versions of the Master. (PROSE: Harvest of Time)

During the Second War in Heaven, the Master became the War King of Gallifrey, but was overthrown after his anthropomorphic TARDIS Lolita consumed him. The events of the War were later erased from the timeline by the Eighth Doctor. (PROSE: The Ancestor Cell)

In one universe, the Master became a Magistrate for the High Council upon graduating the Time Lord Academy, and was still close friends with the Doctor. Over time, his devotion to justice and discipline devolved into an obsession with order which marked the beginning of his descent into darkness. (PROSE: The Infinity Doctors)

In a parallel universe, the Master was still a loyal Time Lord who went under the name Koschei. He was working for the Celestial Intervention Agency and travelled with a human companion called Ailla. (PROSE: The Face of the Enemy) They became stranded on Earth after defeating the Great Intelligence, and the Republic of Great Britain captured him for information. Ailla was killed and Koschei was tortured until all his regenerations were used up. Koschei died when he was confronted by the Master from N-Space, who turned off his life-support machine at his request. (PROSE: The Face of the Enemy)

In an alternative universe, the Master aided the Daleks in a war against the Time Lords. The war was being led by the Sixth Doctor, who was President of the Time Lords. Due to the aid of the Master, the enemy began winning the war. Rather than let them win the war, the Doctor activated the Armageddon Sapphire, which destroyed this universe and killed the Master. (PROSE: The Quantum Archangel)

In a different alternative universe, the Master cooperated alongside the Rani, the Monk and Drax to try to destroy the world using a DNA recombinator, turning the human race into a gestalt consciousness which could be used as a weapon to conquer the universe. (PROSE: The Quantum Archangel)

In a future that never happened, (COMIC: Fast Asleep) the Master operated on the brain of his TARDIS during the Last Great Time War, which resulted in a chronal tumour portruding from one side of the console, (COMIC: The One) though he never activated the tumour for use. (COMIC: Running to Stay Still)

When the Cybermen allied with Rassilon to take over history, the Master, while fighting the Third Doctor, was caught up in a time distortion which resulted in him being cyber-converted while pleading to the Doctor for help. (COMIC: Prologue: the Third Doctor)

Personality
The Master was the polar opposite of the Doctor in almost every respect; condescending, arrogant, vain, and lusting for power. (TV: Terror of the Autons, Colony in Space, The Sound of Drums) However, the Master's insanity was in part due to the High Council from Gallifrey's future sending a four-beat rhythm of drums into the Master's mind, (TV: The End of Time) with the Tenth Doctor recalling that staring into the Untempered Schism as a child caused the Master's personality to change. (TV: The Sound of Drums)

The Master had the ability to control his regenerations, with each face he selected baring the imprint of his mind, leading the Master the processes the same characteristic across various regenerations. (PROSE: Harvest of Time) Comfortable with his villainous reputation, the Master took insults about his madness as compliments, (TV: The Time Monster, The Five Doctors, The Sound of Drums) and reacted with offence if someone asked her if she had turned over a new leaf. (TV: The Magician's Apprentice)

When introducing himself, or enthralling someone, the Master would say, "I am the Master and you will obey me." (TV: Planet of Fire) He also liked to say "my dear Doctor" when addressing his adversary. (TV: Colony in Space, Time-Flight, The Caves of Androzani)

Unlike the Doctor, who usually needed his companions to convince people that he knew what he was doing, the Master had little problem manipulating people into helping him with his evil plans. (TV: The Time Monster, Doctor Who)

Extremely self-centered, the Master was willing to destroy Gallifrey to regenerate himself, (TV: The Deadly Assassin) believed that the battle for the Glory was to be between him and the Eighth Doctor, (COMIC: The Glorious Dead) thought that Carmen's prophesy referred exclusively to him, (TV: The End of Time) and viewed the Doctors saving Gallifrey as an attempt to save her. (TV: Death in Heaven)

The Master's schemes usually fell into three categories; conquest, (TV: Terror of the Autons, The Mind of Evil, Colony in Space, The Dæmons, The Time Monster, Logopolis, The Sound of Drums) survival, (TV: The Deadly Assassin, The Keeper of Traken, The Five Doctors, Planet of Fire, Survival, Doctor Who, The End of Time) and the death of the Doctor. (TV: Castrovalva, The Ultimate Foe) Similar to the Monk, the Master would also, on occasion, attempt to disturb the flow of history, (TV: The King's Demons, The Mark of the Rani) and, when imprisoned, would devote his energies to gaining his freedom. (TV: The Claws of Axos, The Sea Devils, Time-Flight, Utopia)

Throughout his lives, the Master would adopt many disguises and aliases, often to pursue his goals, (TV: Terror of the Autons, The Mind of Evil, Colony in Space, The Dæmons, The Time Monster, Frontier in Space, Castrovalva, The Sound of Drums) though other times with no reason or explanation given. (TV: Time-Flight, The Mark of the Rani)

The Master's disguises ranged from the providence of false qualifications, (TV: Terror of the Autons, The Mind of Evil, Colony in Space, The Dæmons, The Time Monster, Frontier in Space, The Sound of Drums) to employing masks and heavy makeup (TV: Terror of the Autons, The Mind of Evil, The Claws of Axos, Castrovalva, Time-Flight, The King's Demons) or a change of clothing, (TV: The Sea Devils, Logopolis, The Mark of the Rani, PROSE: Out of the Green Mist) to even changing his physical forms. (TV: The Keeper of Traken, Utopia, Dark Water)

In a show of vanity, the Master's choice of alias would often reflect his title of "Master". (TV: Terror of the Autons, The Dæmons, The Time Monster, The King's Demons, Dark Water; PROSE: Doctor Who Fights Masterplan "Q" , Night Flight to Nowhere, The Time Savers, Legacy of the Daleks, Last of the Gaderene, The Quantum Archangel, The Duke of Dominoes, The Spear of Destiny; AUDIO: Dust Breeding, Trail of the White Worm, Mastermind, The Evil One, And You Will Obey Me, Masterpiece, The Two Masters)

High Council President Borusa described the Master as "one of the most evil and corrupt beings [the] Time Lord race [had] ever produced" and that his "crimes [were] without number, and [his] villainy without end." The Master seemed amused by the description.(TV: The Five Doctors)

The Master was referred to as a "jackanapes", an "unimaginative plodder" and the "personification of evil" by the Third Doctor, (TV: Terror of the Autons, The Sea Devils) the "quintessence of evil" by the Fourth Doctor, (TV: The Deadly Assassin) an "arrogant psychopath" by the Eighth Doctor, (COMIC: The Glorious Dead) and "stone-cold brilliant" by the Tenth Doctor. (TV: The End of Time)

Iris Wildthyme called the Master a "phallocentric dope". (PROSE: The Scarlet Empress) Rassilon described the Master as the Time Lords' "most infamous child", (TV: The End of Time) while Ashildr described her as the "lover of chaos". (TV: Hell Bent)

First incarnation
Koschei admired Magnus' ability to command people, and wished that he could one day learn to do the same. (PROSE: Divided Loyalties)

Thirteenth incarnation
In his thirteenth incarnation, the Master was often arrogant and impatient, taken to be rude towards all and showing no tolerance for stupidity. (TV: The Dæmons, The Sea Devils, The Time Monster, Frontier in Space) To sway others to his way of thinking, the Master acted as a suave and debonair gentleman, with a sardonic sense of humour. (TV: Terror of the Autons, The Time Monster) When his own survival was at stake, the Master would not hesitate to betray his allies to save himself. (TV: The Claws of Axos)

The Master was willing to play the long game, spinning a web of lies while maintaining several back-ups in his schemes. (TV: The Mind of Evil) He seemed to truly believe his delusions of grandeur, proclaiming that he and the Doctor could "reign benevolently," ending "war, suffering [and] disease," (TV: Colony in Space) and that, instead of "all this talk of democracy, freedom, [and] liberty", the world needed "strength, power and decision." (TV: The Dæmons) When the Doctor accused him of being paranoid, the Master stated that everyone was paranoid, he was just honest about his paranoia. (TV: The Time Monster)

The Master held himself in high-esteem, even believing himself immune to the mind parasite within the Keller Machine, when in truth, he was only able to resist it's attack on him for a short time, and with great effort. (TV: The Mind of Evil) He also demonstrated a strong confidence in himself when he walked into the UNIT HQ on the edge of London without fear of capture, instead hypnotising a handful of UNIT personnel. (TV: The Claws of Axos)

This Master also had a juvenile side to him, making blithely sarcastic comments about an impending nuclear meltdown, (TV: The Claws of Axos) enjoying an episode of Clangers in his prison cell, (TV: The Sea Devils) and reading The War of the Worlds while trying to instigate a war between Earth and Draconia. (TV: Frontier in Space) He also had a sadistic side, taking particular pleasure in goading the Brigadier into attacking Axos when they both knew that it would put the Doctor and Jo Grant in danger. (TV: The Claws of Axos) He also took considerable delight in blackmailing the Doctor and Jo on Uxarieus. (TV: Colony in Space)

The Master often killed people, but saw murder as a regrettable necessity rather than a lifestyle choice. However, he would casually murder those whom he could not control, (TV: Terror of the Autons) or were standing in the way of an item he required. (TV: The Claws of Axos) He believed that those who died as a result of his schemes to be "necessary sacrifice[s]". (TV: The Sea Devils)

Unlike his following renditions, this Master was rarely resentful, instead accepting defeat with only a slight annoyance, (TV: The Dæmons, Frontier in Space) though he once stated that destroying the Doctor's favourite species would "be a reward in itself". (TV: The Sea Devils) The Master learned from his mistakes, placing an anti-intruder alarm beam in his TARDIS after the Doctor stole his dematerialisation circuit. (TV: Terror of the Autons, Colony in Space)

Being a haughty psychopath, he regarded most beings as his inferiors, but had a mutual respect for the Doctor as a worthy opponent and his near intellectual equal, (TV: Terror of the Autons, The Sea Devils) and even showed a certain respect to the Doctor's companions, even if he still considered them inferior. (TV: Frontier in Space) He often found himself unable to kill the Doctor, because that would rid him of the satisfaction of defeating him, (PROSE: Legacy of the Daleks) and would only resort to killing the Doctor if he viewed him as an unmovable obstacle in his plans, (TV: Terror of the Autons) considering his quarrel with the Doctor to be something of a game, though he was willing to risk the Doctor's life on the Keller Machine to satisfy his curiosity. (TV: The Mind of Evil) However, the Master was not above working alongside the Doctor when necessary, (TV: The Claws of Axos) and even offered to rule the universe with him. (TV: Colony in Space)

While in Atlantis, the Master formed a relationship of sorts with Queen Galleia, remarking that she was beautiful and promising her power. Both Galleia and Lakis commented that the Master had "the bearing of a God". (TV: The Time Monster)

During this incarnation, the Master would often smoke a cigar. (TV: The Mind of Evil, The Time Monster)

A master manipulator, the Master knew how to use others' greed and sense of duty as bargaining tools in his schemes, (TV: The Claws of Axos, The Sea Devils) and how to use his authority as an adjudicator to manipulate and influence the human factions and their competing aspirations on Uxarieus. (TV: Colony in Space)

The Master was also stronger than he appeared, as he was able to physically overpower Luigi Rossini, (TV: Terror of the Autons) Harry Mailer, (TV: The Mind of Evil) Smedley, (TV: The Sea Devils) and John Benton. (TV: The Time Monster) He was also able to make a small jump onto a moving lorry from a bridge, and then swing down to the driver's cab to hypnotise the driver. (TV: The Claws of Axos)

"Tzun" incarnation
In contrast to his previous incarnation, this Master was calmer, less emotional and flustered, with a proud bearing and an inscrutable demeanour, (PROSE: First Frontier) though he would resort to a panicked state upon confronting the unexpected. (PROSE: Happy Endings) Highly manipulative, the Master would maintain control of a situation, while making others around him think he was not, (PROSE: First Frontier) though would loose this advantage when he knew he was overpowered, such as when at Bernice Summerfield and Jason Kane's wedding. (PROSE: Happy Endings)

Unlike his immediate predecessor, this Master was aware that his theatrical plotting could be his undoing, but found amusement in the irony rather than bitterness. (PROSE: Happy Endings)

He thought very highly of his hypnotic skills, finding it amusing when he made two guards believe he was Major Kreer. He looked down at humanity, treating them like children, and believed the concept of regeneration to be beyond them, (PROSE: First Frontier) and showed a disdain for explaining things he did not have interest in. (PROSE: Happy Endings) However, he showed some respect towards Ace, who had killed his previous incarnation, believing she would make a good enforcer and admiring her willpower. (PROSE: First Frontier) He also enjoyed fencing with Mike Yates and Sarah Jane Smith. (PROSE: Housewarming)

While he agreed with the Ice Lord Savaar that he lacked a degree of honour, the Master would only resort to harming others if he found an advantage in the act, opting to perform with "a considerable degree of leniency" when sabotaging Bernice and Jason wedding until he was forced to take Bernice hostage at gunpoint during the ceremony. (PROSE: Happy Endings)

This incarnation of the Master was just as adept at winding the Doctor up as his predecessor was, claiming that the Seventh Doctor's pacifism was pure hypocrisy, (PROSE: First Frontier) and taking delight in his apparent inability to protect his friends from Bloom. (PROSE: Happy Endings) However, he did hold the Doctor in some regard, believing the Tzun incapable of overpowering him on their own, and insisting he was a threat to be eliminated, though he felt bittersweet about it, admitting to himself that the Doctor was an inspiring adversary, (PROSE: First Frontier) though reacted with horror when four variants of the Seventh Doctor confronted him at once. (PROSE: Happy Endings)

Nonetheless, the Master pointed out that the Doctor preferred to kill and destroy from a distance, such as with the Sea Devils. To prove this point, the Master handed the Doctor a blaster and baited him to shoot him at close range, which the Doctor refused to do. (PROSE: First Frontier)

"John Smith" incarnation
As John Smith, the Master was a kind-hearted, charming, humble, knowledgeable gentleman who was still somehow deeply aware of his dark nature and troubled by it. (AUDIO: Master) As his true self, this incarnation had a far more darker and evil side to him than most of his other selves. He seemed to enjoy being mysterious about his true identity and enjoyed giving his enemies riddles as to who he truly was. Also compared to his other selves, this incarnation was far calmer and well spoken, which made him sound more sinister. (AUDIO: Dust Breeding)

"Evil? I crave power, dominion, knowledge of the forbidden and secret. So much more than simply "evil"."

- The Master

As John Smith, the Master's favourite dessert was marinated figs with a raspberry coulis, he grew tomatoes, made his own wine, enjoyed theatre, books, and the company of friends. The Master was not fond of dogs or people with shifty eyes. (AUDIO: Master)

While body-jumping
This rendition of the Master was generally calm and sinisterly villainous, but was also capable of terrifying rage. After being exterminated by the Daleks, the Master took possession of Bruce and, after finding that his new body was not stable, became determined to steal the remaining lives of the Doctor himself. When his attempt to take the Eighth Doctor's lives was thwarted, the Master reverted to a more basic, brutal approach, attempting to smash the Doctor's head in with a staff positioned around the Eye, proclaiming that life was wasted on the living and rejecting the Doctor's aid when he was being pulled into the Eye. (TV: Doctor Who)

This rendition of the Master viewed life as being "wasted on the living", and held it in no regards, unhesitatingly killing Bruce, his wife, four guards, Chang Lee, Grace Holloway, (TV: Doctor Who) Joey Sneller, (PROSE: The Novel of the Film) Duncan, (COMIC: The Fallen) and Violet, (AUDIO: Mastermind) whilst also attempting to kill the Eighth Doctor, (TV: Doctor Who; COMIC: The Glorious Dead) and an infant Edward Grainger. (PROSE: Prologue) He was also petty, snapping Chang Lee's neck when he refused to follow an order, (TV: Doctor Who) turning Earth into a religious dictatorship to spite the Doctor, (COMIC: The Glorious Dead) and killing Violet solely because she foiled his attempt to kill Edward Grainger. (AUDIO: Mastermind)

Unlike previous renditions, the Master was extremely serious when there was work to be done, more focused on getting the task at hand completed than engaging in small talk and humour. (TV: Doctor Who; COMIC: The Glorious Dead) He was also quite literal, not understanding expressions such as killing someone to mean making them laugh. (TV: Doctor Who)

In this rendition, the Master felt a pedantic need to correct people on bad grammar, such as when he corrected Grace Holloway's "kiss as good as me" to "[kiss] as well as [me]". As with previous renditions, he was also comfortable with his villainous reputation, thanking Nurse Curtis for playfully calling him "sick". (TV: Doctor Who)

During the period of his life when he was forced to possess various human bodies to survive, the Master would take on minor personality traits and quirks from the bodies he possessed, and, as a result, he started to fear that his "essence" would eventually become too diluted if he were to jump to another body too frequently, and began to go to great pains to make sure his bodies lasted as long as possible by only possessing members of the same bloodline. However, as he would later admit, the Master began to somewhat enjoy the experience of being human as the years went by, and even toyed with the idea of dropping his plans of restoring his Time Lord body and just remain in a human body. (AUDIO: Mastermind)

Behind the flamboyancy and brutal savagery, the Master still maintained his cunning, leaving a crystalline structure on the Eye that would give the Doctor amnesia in vengeance for his previous defeat, (PROSE: The Eight Doctors) using his link to the TARDIS to send the Doctor to specific locations to later show him the folly of his worth, (COMIC: The Glorious Dead) and acquiring a casino in Las Vegas to accumulate the money needed to fund the experiments to elongate the lifespan of his host bodies, while also becoming head of the Hudson Dusters, and controlling part of the mafia. (AUDIO: Mastermind)

A patient incarnation, this Master simultaneously juggled a grand plan to achieve divine power with a pettier plan to morally humiliate the Doctor during the fight for the Glory, (COMIC: The Glorious Dead) and also, while trying to remain undetected in the history books, possessed a line of men from the Maestro family to ensure he had a succession of bodies that he could adjust well to, passing from father to son once there was a grandson alive to inhabit later on. (AUDIO: Mastermind)

A new lease of life
This incarnation of the Master was excitable, enthusiastic, theatrical, and attention seeking, (AUDIO: UNIT: Dominion) priding himself on his fashion sense of a simple, classic suit with a velvet jacket. (AUDIO: Eyes of the Master) He was also a manipulative megalomaniac, who used his polite mannerisms to enhance his diabolicalness.

Despite his more theatrical side, this Master was as ruthless as his other incarnations, creating his own Infinite warriors by replacing human eyes with fake ones that had Eminence substance in them, (AUDIO: Eyes of the Master) and manipulating an Eminence attack on Heron's World for an experiment. (AUDIO: The Death of Hope) This Master was also unorthodox in his malice, being more interested in being cruel and spiteful, opting to humiliate and punish his opponents, even after he had bested them. He preferred to let others believe they had defeated him before turning the tides and took great pleasure in emotionally humiliating them after he took back control.

He also accused the Eighth Doctor's attitude about a war with the Daleks of being hypocritical, noting that, while the Doctor claimed not to be fighting a war with them, he had battled the Daleks across time and space. (AUDIO: Eyes of the Master)

He would often introduce himself by saying, "Hello, you!", and, much like the Sixth Doctor's habit to quoting poetry, had a flair for Shakespeare's soliloquies. (AUDIO: Eyes of the Master)

This Master also had a habit of imitating the Doctor, such as tricking UNIT into believing him to be a future incarnation of the Seventh Doctor, (AUDIO: UNIT: Dominion) taking on the Doctor's role of a lone hero saving a group of innocents, (AUDIO: The Death of Hope) and even replacing the Doctor with himself in Molly O'Sullivan's memories. (AUDIO: Rule of the Eminence)

His plans were meticulous, and like his degenerated incarnation, this Master liked to plan for every possible obstacle, but instead of waiting for the contingency to be activated by his opponents, he openly went out of his way to close off those obstacles beforehand. (AUDIO: Masterplan)

This Master was more willing to go into dangerous situations than his other incarnations, not only making deals with the Eminence and the Daleks for universal domination, but also showed signs of extreme anti-obedience and arrogance, openly mocking his allies while fully aware that they could kill him anytime they wanted. (AUDIO: Master of the Daleks) He was also known for making quips and enjoying himself as he carried out his schemes, which allowed the Seventh Doctor to realise what had happened when the Cult of the Heretic caused this Master to switch bodies with his decayed past self as the decayed Master was having far more fun than he usually would (AUDIO: The Two Masters).

While the Master had always displayed a degree of disrespect for the laws and workings of time travel, this incarnation was especially brazen in this attitude, stating that he could simply use his TARDIS to cross his own timeline and attempt to achieve a failed plan without any concern for the paradoxes or personal dangers involved in doing so. (AUDIO: UNIT: Dominion) So disregarding to paradoxes was he that he even attacked a past incarnation of himself to further his own agenda- although he claimed in hindsight that this was actually done to ensure that history worked out as it should- (AUDIO: The Two Masters), and had no qualms about attempting to kill the Seventh Doctor, despite already being involved in the circumstances behind his regeneration. (AUDIO: UNIT: Dominion)

A slightly lazier incarnation, this Master liked the idea of having an army, but didn't enjoy the prospect of building one up himself.

Seeing his subordinates as possessions instead of people, this Master had no compunctions towards demeaning, mind controlling or even killing subordinates who caught him the wrong way, sparing only the most important ones to his plan until they were no longer of importance. However, he praised hard work and good results, and was genuinely fond of Sally Armstrong, telling the Doctor that Sally was brilliant enough to fly his TARDIS on her own, and even briefly mourned for her after her death. (AUDIO: Masterplan)

This Master would go to great depths to involve the Doctor in his schemes, claiming that he did so simply because he enjoyed the Doctor's company. He was pleased to see the Eighth Doctor in 1970s London, and expressed concern about his health after noticing his had hair been cut. (AUDIO: Eyes of the Master)

Raine Creevy characterised this Master as a "cocky smart-arse". (AUDIO: UNIT: Dominion)

"War" incarnation
While fighting in the Last Great Time War, the Master delighted in the prospect of committing genocide. He saw people as resources, and that teaming up with the War Doctor was a worthwhile option during wartime. (COMIC: The Organ Grinder) The Master wanted to fight in the Time War, but seeing the hopelessness of his efforts with the Doctor he fled from their fight with the Cyclors. He concluded that he only enjoyed death and chaos only when it was fun for him. (COMIC: Kill God)

"Yana" incarnation
This Master started his life declaring vengeance, (COMIC: Fast Asleep) but soon became terrified by what he saw in the Last Great Time War, and when the Dalek Emperor took the Cruciform, he fled the end of the universe, (TV: The Sound of Drums) using a Chameleon Arch to turn himself into a human professor named "Yana", (TV: Utopia) and hide from the Time Lords. (TV: The Sound of Drums)

Under the Chameleon Arch, Professor Yana was a benign old man who had lost faith in the Utopia Project. His spirit was revitalised by the Tenth Doctor, and the two shared a mutual admiration. He was also somewhat scatterbrained and slightly lacking in self-confidence, at one point referring to himself as "a stupid old man." Also, like the Tenth Doctor with Martha Jones, Yana could not see that his assistant, Chantho, had feelings for him.

This Master's true personality was cold, ruthless and vengeful. In contrast to his human identity, he was always serious and dignified, but also abusive, smug and condescending, citing that he had the right to defend himself after he was the one provoked. He was extremely aggressive towards Chantho after regaining his memories, citing that her constant cultural ticks drove him insane during their time together.

This Master was a misogynist, considering it an embarrassment to have been killed by a girl, and was shown to be humiliated by the mere thought of it. Despite being in pain, he welcomed his regeneration in a grandiose fashion, declaring that "the Master [was] reborn." (TV: Utopia)

As "Harold Saxon"
Immediately after his regeneration, the Master appeared to have gone more insane than ever, gleefully jumping round the Doctor's TARDIS' control console, while ecstatically laughing, and toying with his new voice. (TV: Utopia) By this point in his life, the Master was tormented more than ever by "the drums" in his head. (TV: The Sound of Drums)

Much like his previous incarnations, this Master was ostentatious; offering out jelly babies and grits, while also dancing to the Rogue Traders, (TV: The Sound of Drums) and the Scissor Sisters. (TV: Last of the Time Lords) He also enjoyed watching the Teletubbies, believing that the televisions in their stomachs was true evolution. (TV: The Sound of Drums)

He was extremely vain and self-centered, with the Doctor noting that he would never destroy himself, even if he could destroy the Earth with him. During the Year That Never Was, he had monuments of himself built all over Earth, and, according to Martha Jones, had even sculptured himself onto Mount Rushmore. His vanity was so vast that when the Doctor forgave him for his actions, the Master collapsed. (TV: Last of the Time Lords)

This Master also had an exceptionally heightened sense of his own brilliance, even reciting a Bible-style verse of his own making to the Doctor as the Toclafane invasion began. (TV: The Sound of Drums) He also held Time Lords as the absolute superior race, automatically assuming the right to alter history on the principle of him being a Time Lord. (TV: Last of the Time Lords)

Behind his charismatic and charming demeanor, this Master was sadistic and childishly degrading, even going as far as to slip subtle and private jabs at the Doctor into his public speeches. When Francine, Clive and Tish were forcibly taken to the Valiant under armed guard, the Master shamelessly treated the ordeal like a school field trip, (TV: The Sound of Drums) and, during the Year That Never Was, he kept them as slaves, taking every opportunity he could to belittle them in the most childish ways possible. (TV: Last of the Time Lords)

Even after he aged the Doctor to an elderly man, (TV: The Sound of Drums) the Master continued to humiliate his old friend by having him live in a makeshift tent aboard the Valiant during the Year That Never Was, and then furthered the humaliation by aging him further, until he morphed into an ancient dwarf-sized body, and then kept him locked up in bird cage. (TV: Last of the Time Lords)

The Master showed no hesitation when it came to murder, but would always find a motivation when he took a life; assassinating the Cabinet of the United Kingdom for abandoning their political parties when they saw the vote swinging his way, and setting the Toclafane on Vivien Rook after she uncovered his identity fraud. After revealing his true nature during the Toclafanes' live broadcast, he ordered Arthur Coleman Winters's execution as a show of power, and then commanded the decimation of the population of Earth for no other reason than to emphasise his new dominion. (TV: The Sound of Drums) When he learned that the Drast had been operating in Yokohama, he ordered the Toclafane to destroy the islands of Japan. (PROSE: The Story of Martha)

He did, however, show a sadistic glee when he resorted to murder, continuously listening in on Rook's dying screams, being exited by the prospect of killing the immortal Jack Harkness a second time, (TV: The Sound of Drums) and having a chuckle after casually killing Thomas Milligan. (TV: Last of the Time Lords) He was also known to kill those who brought him bad news. (PROSE: The Story of Martha)

Like his degenerated and Time War incarnations, this Master had dangerous forward thinking, and knew it was a mistake to give the Doctor hints about his plans while he had the power to intervene. (TV: Utopia) His methods for dealing with the Doctor during his reign as prime minister showed an efficient and simple mindset; framing the Doctor for murder to send the police after him, arresting Martha's family for insurance, and luring Torchwood Three away to the Himalayas to prevent Jack from recruiting their aide. (TV: The Sound of Drums)

The Master also shared the Tenth Doctor's technical knowledge, as he was able to construct his laser screwdriver from Earth components and miniaturise Richard Lazarus' genetic manipulation technology. He was also able to cannibalise the Doctor's TARDIS and turn it into a Paradox machine. He also designed the Archangel Network and the Valiant. (TV: The Sound of Drums)

The Master made a habit of saying, "Oh, no you don't", saying it when the Doctor was locking the TARDIS's coordinates, (TV: Utopia) when avoiding a conversation with the Doctor, and when the Doctor restored his youthful physiognomy with the Archangel Network's telepathic link. (TV: Last of the Time Lords)

While he originally showed great affection for his wife, Lucy Saxon, (TV: The Sound of Drums) the Master's vanity and overconfidence in his successful taking of Earth led him to show less concern for Lucy, even teasing her with the possibility of replacing her with his masseuse. He was, however, unsurprised when she shot him, instead making a quip about it "always [being] the women". (TV: Last of the Time Lords)

After his plans to start an intergalactic war with the universe was thwarted by the Doctor and Martha, the Master resorted to a more cowardly and desperate spitefulness, threatening to kill the Jones family after his attempts to shoot the Doctor failed, and then cowering in fear when the Doctor descended towards him with the power of the Archangel Network. After the Doctor expressed his forgiveness, the Master made a last ditch effort to destroy Earth by igniting the Black hole converters in his warships, reasoning that if he could not have the Earth then neither could the Doctor, until the Doctor pointed out that such an act would also kill the Master. (TV: Last of the Time Lords)

When the Doctor successfully reverted the Paradox machine's influence, the Master made an attempt to retreat, but gave up when Captain Jack caught him. He then beaded Francine Jones into murdering him, until the Doctor convinced her otherwise. After he expressed annoyance at being "kept" by the Doctor, the Master was shot by Lucy and, in a final show of spite, decided not to regenerate and die. Before slipping away, however, the Master fearfully asked the Doctor if he thought "the drumming" would stop after he died. (TV: Last of the Time Lords)

The Master was a complete and utter genius however this clashed with his extreme emotional immaturity, he could be short-tempered, single-minded and stubborn, narcissistically claiming to Earth that he had won while attempting to execute an imprisoned Martha Jones via broadcast but his gleeful pride and sheer stubbornness made it impossible for him to realise that he was actually being manipulated by his captive.

Another difference towards the Doctor and the Master is that while the Doctor actually respected his TARDIS and treated it like a part of him the Master showed absolutely no remorse for cruelly turning it into a Paradox Machine with the Doctor realising that she was in pain. The Master even prided it as his "masterpiece."

Damaged body
After his sabotaged revival, the Master not only became more insane and dangerous than ever, but also displayed a feral state that lead him to act like a predatory animal, plagued by an insatiable hunger. Tormented more than ever by "the drumming", but also seeing it as a central piece of his identity, the Master was convinced that something was calling to him through the drum beat. He was reduced to being vastly more unpredictable, even in comparison to his previous incarnations, and was even prone to insane fits of rage.

The Master still held the lives of others without thought, unceremoniously consuming Sarah, Tommo and Ginger's life forces, leaving them as skeletons, and showing that he was undisturbed entirely by killing the very people who resurrected him on the basis that they were humans. He also thrived on chaos, describing the last day of the Last Great Time War as "[his] kind of world", maintained his sadistic immaturity, laughingly taunting the Doctor and Wilfred Mott whilst sending people to kill Donna Noble.

Still as vain and narcissistic as he was before, the Master not only used the Immortality Gate to turn the human race into duplicates of himself, which he dubbed the "Master Race", he also threatened to do the same to the Time Lords, but was thwarted when Rassilon reverted the Master Race back to human. The Master also hysterically referred to himself as the funniest thing in the whole world, and laughed derisively at the Doctor once the Doctor heard the drumming for the first actual time, mocking him for simply believing the Master was mad, though he very clearly was.

Despite his insanity, the Master was capable of lucid conversation, nostalgically discussing their now-ancient childhood friendship with the Tenth Doctor. He was, as previously, anxious for the drumming in his head to stop, but this time he reacted with joy at the realisation that the drumming could serve his purpose. He was also still a cunning strategist, allowing himself to remain Joshua Naismith's prisoner so he could repair the Immortality Gate and use it to create his Master Race, all so he could turn the Earth into a warship, but then improvised a plan where he used his duplicates to locate the source of "the drumming". The Master also expressed hysterical joy when he discovered the White-Point Star, laughing uncontrollably at the evidence that Gallifrey was still intact and his race surviving.

However, this Master was not without his limits, considering Rassilon's Ultimate Sanction to be suicidal, but was still willing to subject himself to it to appease Rassilon. He also had a sense of honour, as he sacrified himself to save the Doctor from Rassilon after the Doctor chose not to kill either of them, also getting his revenge on Rassilon for implanting "the drumming" in his head, and for Rassilon trying to kill him for being "diseased". He also proved to have an apocalyptic temper, screaming his vengeance on Rassilon while he sacrificed himself, demonstrating more fury than his previous incarnations had ever shown on any other subject. (TV: The End of Time)

As "Missy"
After his botched resurrection, the Master regenerated into a woman. (TV: Dark Water) Though he had previously preferred a male form, (PROSE: The Novel of the Film) the Master fully embraced her new gender, changing her title to "the Mistress", shorting it to "Missy", and, considering herself to be "old fashioned", insisted on being addressed as Time Lady, (TV: Dark Water, The Witch's Familiar) and nicknaming herself the "Queen of Evil". (TV: Death in Heaven) She also adopted a Scottish accent, claiming she would keep it after taking a liking to the Twelfth Doctor's accent, (TV: Deep Breath) but would also utilise other accents when she felt the need. (TV: Death in Heaven, The Witch's Familiar)

No longer choosing to hide behind a rational persona, Missy openly described herself as "bananas", but took offence when Danny Pink called her a "lunatic". (TV: Death in Heaven) She adopted a bubblier personality, (TV: Deep Breath, Death in Heaven) and took on more choreographic movements. (TV: Deep Breath, Dark Water, Death in Heaven, The Witch's Familiar) She also displayed tendencies of being a show-off, such as vastly enlarging her face on a UNIT monitor in a comical manner for no reason other than she could. (TV: The Magician's Apprentice)

Even though she employed a welcoming and sociable façade, (TV: Deep Breath, Into the Dalek, Dark Water, Death in Heaven) Missy had a vulnerable and broken side, particularly when she explained her entire plan was so she could rekindle her friendship with the Doctor, and when she thought he would kill her to spare Clara's soul, (TV: Death in Heaven) and also showed her fears of being on Skaro. (TV: The Magician's Apprentice)

Believing that the Doctors saving of Gallifrey was meant to save only her, (TV: Death in Heaven) Missy acquired an obsession with the Doctor, telling the Half-Face Man that, while the Doctor could be mean to others, he would not be with her because he "loved [her] so much". She openly referred to him as her "boyfriend", (TV: Deep Breath) tracked his movements across time and space, (TV: Flatline, In the Forest of the Night, Death in Heaven) and even professed that her hearts "belonged to [the Doctor]" after passionately kissing him. (TV: Dark Water) She also began planning Osgood's murder after the Doctor invited Osgood to travel with him, (TV: Death in Heaven) and believed she should shoot the Doctor in a jealous rage when he ran off to save Clara. (TV: Dark Water) Unlike her immediate predecessor, Missy was open to the idea of being the Doctor's prisoner, so long as she and him were together. (TV: Death in Heaven) Despite their relationship appearing romantic at times, Missy denied that she loved the Doctor, even showing disgust at the thought, instead insisting it to be a complicated friendship, though she expressed jealously when the Doctor called Davros his arch-enemy. (TV: The Magician's Apprentice)

Instead of a hunger for domination, Missy "need[ed] [her] friend back", creating an army of Cybermen from Earth's dead to give to the Doctor as a birthday present. However, this was revealed to be a plot to convince the Doctor that they were not so different by giving him an unstoppable army with which to "right wrongs", her plan being to give him an unstoppable army to corrupt his mind, turn him to her way of thinking, and ultimately rebuild their friendship. (TV: Death in Heaven) She later employed the Doctor's hatred of the Daleks to get him to kill Clara when she had been placed in a Dalek casing. (TV: The Witch's Familiar)

Despite her desire to reconnect with him, Missy enjoyed taunting the Doctor about the status of the lost Gallifrey, and how she didn't have to divulge the planet's location to him. She also had no qualms about him falling to his death after destroying Boat One, though considered it a boring demise that lacked finesse. (TV: Death in Heaven) She also enjoyed having information that others did not, such as having knowledge of the Doctor's past that others could not argue with. (TV: The Magician's Apprentice)

Missy retained her predecessors' sadistic tendencies, demonstrating cruel pleasure at taunting her victims before she killed them, such as telling Dr Chang she would miss him and promising to always keep a picture of him "looking so sweet" before she murdered him. (TV: Dark Water) She also encouraged Osgood to have more self-confidence, while counting down to her death to torment her. However, she atomised Seb without a second glance for no reason other than that the AI was annoying her. (TV: Death in Heaven)

Viewing everything as being born to die, Missy held no regrets when it came to murder, describing her urge to kill as akin to a child wanting to pop a balloon, (TV: Death in Heaven) and having a preference for killing "clever-clogs" because they "[made] the best faces". (TV: The Witch's Familiar) Missy also held no respect for the dead, using dead human bodies to create a Cyberman army, (TV: Dark Water) and crushed Osgood's glasses under her heel while posthumously thanking her for being "yummy". (TV: Death in Heaven)

Unable to grasp the concept of doing something morally ambiguous to potentially improve the lives of countless others, Missy deemed any act which she viewed as evil as unchangeably bad. (TV: Death in Heaven)

Missy was a devious planner, with the Doctor surmising that she had exploited the paranoia the super rich had towards their mortality to use their wealth and mortal remains for the 3W Institute and create a new race of Cyberman. (TV: Death in Heaven) While trapped on Skaro with Clara Oswald, Missy's plans constantly changed from wanting to ally with the Daleks, (TV: The Magician's Apprentice) to wanting to help the Doctor, to then wanting the Doctor to unintentionally kill Clara. (TV: The Witch's Familiar)

Missy was a skilled manipulator, able to manoeuvre others into place with ease by exploiting their desires, such as Osgood's desire for the Doctor's approval, the Doctor's desire to find Gallifrey, (TV: Death in Heaven) and Clara's desire to save the Doctor from the Dalek City. (TV: The Witch's Familiar) She was also a convincing liar, especially when using her talent for manipulative reasons. She pretended to be a welcome droid, and even improvised a mnemonic acronym to go with her name, when she first encountered the Twelfth Doctor, (TV: Dark Water) and tricked him by giving him false coordinates to where Gallifrey had supposedly reappeared after her Cyberman army had been destroyed. (TV: Death in Heaven)

While she was as cunning as her male predecessors, Missy's impractically long plan for her Cyberman army was not without its faults; giving the dead a choice about whether to be cyber-converted or to live in the Nethersphere, (TV: Dark Water) trying the blow up the Doctor on Boat One despite him being instrumental in her master plan, and basing her entire plan on a moral decision that she had seen the Doctor make numerous times in previous incarnations, that of allowing one evil act to ensure the greater good, and expecting a different outcome. (TV: Death in Heaven)

Missy also opted for one single solitary scheme with virtually no contingencies or back-up plans in place to help steer events back towards her favour like her previous incarnations employed, instead opting to give the Doctor false hope of reaching Gallifrey after she was beaten, (TV: Death in Heaven) and walking away with nothing but taunts to say when the Doctor didn't kill Clara. (TV: The Witch's Familiar)

While building up to a murder, Missy would insisted that her victim "say something nice" to her, and would wait patiently for them to reply. (TV: Dark Water, Death in Heaven, The Magician's Apprentice) She also insisted that anyone aiming to kill her do the same with her, (TV: Death in Heaven) and would take offence if a threat to kill her was not carried out. (TV: The Witch's Familiar) She also puckered her lips and blew kisses before killing each of her victims, even applying lipstick before killing Osgood and her guards. (TV: Dark Water, Death in Heaven)

Missy showed a liking for singing, substituting her name in with "Hey Mickey" while in UNIT custody, and singing a verse from "Happy Birthday, Mr President" when giving the Doctor control of a Cyberman army. (TV: Death in Heaven) She pulled a similar stunt involving "Hey Mickey" lyrics via text communication when she announced her presence to UNIT by halting all aeroplane traffic, and, when imprisoned by Colony Sarff, she passed the time by partaking in opera singing. (TV: The Magician's Apprentice)

Missy could be needlessly cruel in her interactions with others, such as taunting Clara Oswald about her dead boyfriend, (TV: The Magician's Apprentice) and pushing Clara down a hole to test its depths. (TV: The Witch's Familiar) She also ordered the death of Belgians for no reason, (TV: Death in Heaven) vaporised UNIT personnel to prove she had "not gone good," (TV: The Magician's Apprentice) and was believed to have united Clara and the Doctor together just to see what chaos would result from their clashing personalities. (TV: Hell Bent)

Sharing the Doctor's observational skills, Missy could tell a man she had killed was a married father by the ring on his finger and the detection of "baby leakage" on his jacket. (TV: The Magician's Apprentice)

First incarnation
As an eight-year-old boy, the Master had dark hair and bright blue eyes. (TV: The Sound of Drums)

Thirteenth incarnation
The Master's thirteenth incarnation resembled a mature, elegant man, with a swarthy complexion, brown eyes, and mild streaks of grey in his hair. He had a goatee beard, which also had white skunk stripe. (TV: Terror of the Autons)

He generally wore a black Cardin-Nehru jacket, with dark trousers, black leather boots and gloves, and a white cuff-linked shirt. (TV: Terror of the Autons) On occasion, he would wear a suit, with either an orange, a grey or a blue tie. (TV: Terror of the Autons, The Mind of Evil, The Time Monster)

While imprisoned on Fortress Island, the Master wore a black cape over a white turtle-neck jumper, with black trousers. He wore a naval officer's uniform while secretly infiltrating HMS Seaspite as a prisoner. During his return and subsequent escape from Fortress Island, he changed back into his black Nehru jacket and trousers. (TV: The Sea Devils)

"Tzun" incarnation
The Master had a high forehead, glossy moustache, neat beard, aristocratic nose and a lean face, and spoke in a rich cultured voice. (PROSE: First Frontier)﻿ He wore a Vandyke beard, a dark Italian-designed suit, a silk shirt, and a cravat with a silver bird-of-prey tiepin. (PROSE: Housewarming)

"John Smith" incarnation
When the Master was robbed of his Trakenite body by the Warp Core, he regained his disfigured appearance, which Ace described as resembling Freddy Krueger and "a dropped pizza". To hide his disfigurement, the Master took to wearing a golden mask with diamonds encrusted inside it. (AUDIO: Dust Breeding)

After becoming John Smith, the Master did not hide his disfigurement and wore a suit instead. (AUDIO: Master)

While body-jumping
As a Deathworm Morphant, the Master resembled a snake. (TV: Doctor Who)

While within Bruce's body, the Master looked like a young American man, but his eyes appeared reptilian, forcing him to wear sunglasses to remain inconspicuous. (TV: Doctor Who) He decided to have his new hair gelled (PROSE: The Novel of the Film) into a slick backcomb style, (TV: Doctor Who) as opposed to Bruce's messy style. (PROSE: The Novel of the Film) While searching the Doctor, the Master wore denim jeans and a check shirt with Bruce's leather jacket and light boots. When his plan neared completion, the Master changed his into traditional extravagant Gallifreyan robes, citing that he "always dress[ed] for the occasion". (TV: Doctor Who)

After gaining a new body, the Master resembled a black street preacher with a balding head. (COMIC: The Fallen) After revealing himself, he replaced his clothes with a more regal outfit. (COMIC: The Glorious Dead)

When trapped on Earth in the 20th Century, the Master wore whatever his hosts wore normally, to avoid detection. (AUDIO: Mastermind)

A new lease of life
This Master had brown eyes and was bald, (AUDIO: UNIT: Dominion) with many commenting on his lack of hair. (AUDIO: UNIT: Dominion, Eyes of the Master)

He wore a plain suit with a velvet jacket, (AUDIO: Eyes of the Master) and a striped tie. (AUDIO: Masterplan) On one occasion, he wore a white Stetson hat. (AUDIO: The Death of Hope)

While posing as the "Other Doctor," the Master wore a black overcoat, with black trousers, a dark blazer, white shirt and dark green cravat. (AUDIO: UNIT: Dominion)

"War" incarnation
During the Time War, the Master's body was that of a small child. (COMIC: The Organ Grinder) On Veestrax he had short hair, and wore a white shirt with a black jacket. (COMIC: Outrun) By the time he and the Doctor had arrived on Golgalith, the Master's hair was longer, and he sported a red shirt under his jacket. (COMIC: The Organ Grinder)

"Yana" incarnation
As Professor Yana, the Master looked like an elderly man with white hair and blue eyes. He wore a white stiff-collard shirt with a dark red waistcoat and a black cravat, and black trousers. In his waist coat, he housed a Chameleon Arch, disguised as an ordinary fob watch. (TV: Utopia)

As "Harold Saxon"
In this incarnation, the Master was young, with light brown hair, and dark brown eyes. (TV: Utopia) As "Harold Saxon", the Master would wear a black suit with a white shirt and black tie. While meeting President Arthur Coleman Winters, he wore a black coat with a crimson lined interior. (TV: The Sound of Drums)

When the Third Doctor saw this Master in Sild captivity, he described what he saw as "a young man in a business suit, beardless, with a mop of boyish hair," and that his face "seemed friendly and plausible", overall thinking him "the kind of man people would find easy to trust." (PROSE: Harvest of Time)

After his botched resurrection, the Master's hair was bleached light blond, and he gained some stubble. To remain inconspicuous, he wore a black hooded sweatshirt over a red T-shirt with dark combat trousers and black boots.

Due to the corruption of his life force, the Master's outer skin would fade away and reveal the translucent blue life energy encasing his body, exposing his skeleton and internal organs, with each fluctuation making an unsettling primal roar. (TV: The End of Time)

As "Missy"
In her female incarnation, the Mistress looked like a mature woman with pronounced cheek bones, and light blue eyes. Her black hair was wild and free, but held in place in an up-do. She also adopted a Scottish accent like the Twelfth Doctor.

Fashioning herself in Victorian-styled garb, Missy wore a starched collared blouse (TV: Deep Breath) with cameo brooch made of Dark star alloy under her throat, (TV: The Witch's Familiar) along with a high waisted skirt that cut to ankle length, and a croak lengthen jacket which puffed up at the shoulders and dark lapels. She also wore black ankle boots with a sharp toe and tapered heels. Completing the ensemble was a black boater hat worn at a rakish angle, with an arrangement of black and red berries on the brim and a black veil over the top.

For further accessories, Missy wore a spiked bracelet on her left wrist, and carried around a black umbrella. (TV: Deep Breath)

Missy varied the colours of her clothes, with the design coming in black, (TV: Deep Breath) bottle green, (TV: Into the Dalek) a shade of dark orange, (TV: The Caretaker) plum, (TV: Flatline) and violet. (TV: The Magician's Apprentice)

Relationship with the Doctor
The Master's relationship with the Doctor was one of the most complex known between the two Time Lords. He respected the Doctor as a worthy opponent, once offering to use a recently recovered weapon to take control of the universe while offering to share it with the Doctor. (TV: Colony in Space) As time went on, however, the Master became increasingly obsessed with proving his personal superiority, causing him to view the Doctor both as his greatest friend and his worst enemy. He expressed deep anger toward the Doctor, along with a desire for vengeance, (TV: Last of the Time Lords) and accusing the Doctor of causing him to waste his regenerations. (TV: Doctor Who)

Although initially willing to work with the Doctor when the situation required it, (TV: Terror of the Autons, The Claws of Axos) after the Last Great Time War, the Master absolutely refused to listen to the Doctor on any occasion. He evinced his vanity when the Doctor confronted him with the words "I forgive you", which he had been terrified of hearing because it significantly dented his pride. (TV: Last of the Time Lords)

The Master also had a crippling fear of an all-powerful, God-like Doctor, probably based around the Doctor's habit of challenging his old foe's grandiose self-image by constantly derailing his plans. (TV: The Mind of Evil, Last of the Time Lords) The Master enjoyed making playful flirtations towards the Tenth Doctor while speaking on the phone, even asking him if the Doctor was asking him out on a date. (TV: The Sound of Drums) When the Doctor harnessed the psychic energy of the entire human race and effectively became a god, the Master was reduced to sobbing against a wall. (TV: Last of the Time Lords)

After regenerating into a female incarnation, the Master took her sexual innuendos to a new level by referring to him as her "boyfriend" and holding him responsible for her fate. (TV: Deep Breath, Death in Heaven) Upon meeting the Doctor in his twelfth incarnation, she pretended to be an android and passionately kissed him. (TV: Dark Water) She later wanted to give him control of her army of Cybermen, attempting to force him to recognise that they were the same, but he refused and gave it to Danny Pink instead, who stopped her plans. While surprised, Missy didn't try to stop the Doctor as he prepared to kill her to spare Clara Oswald from doing it, but was spared from killing her by the Brigadier who, while Cyber-converted, retained his humanity and shot her. (TV: Death in Heaven) When searching for the Doctor, Missy challenged Clara's scepticism about her concern about him by claiming to have cared about the Doctor "since always" (TV: The Magicians Apprentice) and even begged the Doctor to find out about her plans. (COMIC: The Five Masters)

Companions
Unlike the Doctor, the Master usually worked and travelled alone. On rare occasion, he was seen with companions. Examples included Ailla the Time Lord spy; (PROSE: The Dark Path) Mother Finsey, a woman who was fascinated by the Master's evilness and would follow his track afterwards; (AUDIO: The Transcendence of Ephros) Chang Lee, a young human whom the Master met in San Francisco; (TV: Doctor Who) Katsura Sato, an immortal Japanese samurai who helped the Master in his quest for Glory; (COMIC: The Glorious Dead) Sally Armstrong, who helped him to use the Eminence; (AUDIO: Time's Horizon) Chantho, a female assistant and companion to the Master in his Professor Yana identity; (TV: Utopia) and Lucy Saxon, his wife, who was described as having travelled with the Master in the TARDIS in the same fashion as the Doctor and his companions. (TV: The Sound of Drums)

Clara also temporarily became Missy's companion when they both teleported out of the Dalek city together. Missy treated Clara as her "canary", forcing her to act as bait for the Daleks and test the safety of their situations first. She also made her get inside a Dalek casing so they would be able to sneak back into the city convincingly. (TV: The Witch's Familiar)