User:BananaClownMan/Sandbox/The Master (UNIT enemy): Difference between revisions

| voice actor      = Jonathan Clements

|other voice actor      = [[Nicholas Courtney]]

After the Doctor foiled his attempt to ally with the [[Dæmon]] [[Azal]], the Master was arrested by UNIT [[Sergeant]] [[John Benton]]. With the government using him as a scapegoat to cover up recent extraterrestrial incursions, the Master was moved to various prisons until he was finally imprisoned on [[Fortress Island]] as the sole inmate, but he was eventually able to orchestrate his escape with the aid of the [[Sea Devil]]s.  

After the Master, going by the moniker of the "War Chief", was shot by the [[War Lord]]s for betraying them, ([[TV]]: ''[[The War Games (TV story)|The War Games]]'') he underwent a faulty [[regeneration]] that resulted in him looking like two bodies fused together. After convincing the War Lords that his betrayal of them was just a misunderstanding, he helped them travel to Nazi Germany, where the War Chief served as an occult advisor to [[Adolf Hitler]] as the head of the [[Black Coven]], hoping to change history with the Nazis as his agents. When the [[Seventh Doctor]] confronted him, the War Chief tried to take his healthy body, but the Doctor destroyed his base at [[Drachensberg]] [[castle]] by overloading its [[nuclear reactor]]s and left the War Chief to perish. However, engulfed in the flames of the castles destruction, the War Chief was able to force himself to regenerate ([[PROSE]]: ''[[Timewyrm: Exodus (novel)|Timewyrm: Exodus]]'') into his ninth incarnation. ([[PROSE]]: ''[[CIA File Extracts (novel)|CIA File Extracts]]'') He visited the [[Scoundrels Club]] to recover from the regeneration in comfort. ([[PROSE]]: ''[[Dismemberment (short story)|Dismemberment]]'')

Wanting to start afresh without any specific plans of conquest, he began calling himself "Koschei" again, and also started taking on [[human]] [[companion]]s like [[the Doctor]]. ([[PROSE]]: ''[[The Face of the Enemy (novel)|The Face of the Enemy]]'') However, Koschei had a Time Lady named [[Ailla (The Dark Path)|Ailla]] planted on him by the [[Celestial Intervention Agency]] to monitor his unstable obsession with order; Ailla posed as a [[human]] so Koschei 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, capable of altering timelines without causing paradoxes or attracting the attention of various "higher beings", proved too much for Koschei, and the revelation that Ailla was a spy killed the last traces of [[good]] in him, and he swore that the Doctor would one day call him "Master". After the Doctor left him to die in a [[black hole]], Koschei swore that he would take revenge. ([[PROSE]]: ''[[The Dark Path (novel)|The Dark Path]]'') The Master later reflected that this had been the end of Koschei as a person, with the Time Lord that existed afterwards being only "the Master". ([[PROSE]]: ''[[The Face of the Enemy (novel)|The Face of the Enemy]]'')

The Master penetrated Gallifrey, and gained access to [[the Matrix]] via a console in the old [[Capitol]], giving him a backdoor into the Matrix, which he used to collect classified information for his many devious schemes, ([[PROSE]]: ''[[The Quantum Archangel (novel)|The Quantum Archangel]]'') including the Time Lords' files on the [[Doomsday Weapon]], ([[TV]]: ''[[Colony in Space (TV story)|Colony in Space]]'') the [[Sea Devil]]s, ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'') the [[Deathworm Morphant]]s, ([[PROSE]]: ''[[The Quantum Archangel]]'') the [[Chronovore]]s, and the [[Dæmon]]s. ([[PROSE]]: ''[[A Brief History of Time Lords (novel)|A Brief History of Time Lords]]'') and  

According to [[Adelphi|one Time Lord]], the Master was responsible for several interplanetary wars, but always managed to disappear before he could be brought to justice. Though the Time Lords managed to catch him at least once, the Master escaped before his TARDIS "could be de-energised." ([[PROSE]]: ''[[Doctor Who and the Terror of the Autons]]'')

The Master was present at the first [[Auton]] [[Black Thursday|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. 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 (novel)|Who Killed Kennedy]]'')

The Master first infiltrated [[UNIT HQ|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]], inspiring him to ally himself with the Nestene and to locate more Silurian colonies. He then had Liz forget his presence, whilst also putting the thought in her head to leave UNIT. ([[PROSE]]: ''[[Reconnaissance (short story)|Reconnaissance]]'')

The Master approached the [[Nestene Consciousness]] with an offer to become an "invasion consultant" for them. ([[PROSE]]: ''[[The Secret Diary of the Master (short story)|The Secret Diary of the Master]]'') He then appeared at the [[International Circus]], with [[the Master's TARDIS|his TARDIS]] in the form of a [[horse box]]. He [[hypnosis|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. [[Adelphi|A Time Lord emissary]] alerted the Doctor to the Master's presence on Earth, 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, but the Doctor had already taken his [[dematerialisation circuit]], preventing the Master from leaving Earth in his TARDIS. ([[TV]]: ''[[Terror of the Autons (TV story)|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, with the help of [[George Patrick Barnham]], stopped the Master with the Keller Machine, and the Doctor reactivated the missile's abort mechanism. [[UNIT]] also destroyed the missile along with the Keller Machine, but the Doctor later discovered he had lost the Master's dematerialisation circuit in his altercation with the Master. Shortly after, the Master telephoned the Doctor to let him know that he had found the circuit and was now free to leave Earth behind while the Doctor remained in his exile. ([[TV]]: ''[[The Mind of Evil (TV story)|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 [[Immortal]]s. He convinced the real cult leader, [[Hadley (Deadly Reunion)|Hadley]], that he could serve the cult loyally by supplying them with [[Sarg (drug)|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 (novel)|Deadly Reunion]]'')

Posing as an [[Adjudicator]], the Master travelled to a [[human]] colony on the [[planet]] [[Uxarieus]] in the year [[2472]], where the Time Lord records indicated he would find the [[Doomsday Weapon]] created by the [[Uxariean]]s. Once again the Doctor defeated his plans and the weapon was destroyed. ([[TV]]: ''[[Colony in Space (TV story)|Colony in Space]]'')

Posing as a [[vicar]] named "Victor Magister" in the village of [[Devil's End]] ([[TV]]: ''[[The Dæmons (TV story)|The Dæmons]]''; [[PROSE]]: ''[[Who Killed Kennedy]]'') after murdering [[Smallwood (The Dæmons)|the old vicar]], ([[PROSE]]: ''[[The Eight Doctors (novel)|The Eight Doctors]]'') the Master summoned the ancient [[Dæmon]] [[Azal]], but he failed to understand the power and control that was necessary after summoning him. Following Azal's confrontation with [[Jo Grant]]'s selflessness, Azal destroyed himself through Jo's illogical actions. The Master was captured by UNIT following a failed attempt to escape in the Doctor's car, [[Bessie]]. ([[TV]]: ''[[The Dæmons (TV story)|The Dæmons]]'')

At his trial, the government used the Master as a scapegoat for all the alien attacks which had recently occurred. ([[PROSE]]: ''[[Who Killed Kennedy (novel)|Who Killed Kennedy]]'') They initially wanted to hand him the death sentence for his crimes, but the Master was able to convince them of his usefulness alive by having the Doctor acknowledge him as the "most dangerous mind on the planet". ([[PROSE]]: ''[[Court Hearing – Top Secret and Confidential (short story)|Court Hearing – Top Secret and Confidential]]'')

[[File:DelgadoMasks.jpg|thumb|The Master makes an attempt to escape. ([[COMIC]]: ''[[The Man in the Ion Mask (comic story)|The Man in the Ion Mask]]'')]]

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 (comic story)|The Man in the Ion Mask]]'')

While in custody, with the Doctor on [[Peladon]], ([[TV]]: ''[[The Curse of Peladon (TV story)|The Curse of Peladon]]'') the Master collaborated with UNIT to prevent an invasion by [[Inferno Earth|a fascist version of Earth]], travelling with the Brigadier and [[Ian Chesterton|Ian]] and [[Barbara Wright|Barbara Chesterton]] to the alternate universe and encountering [[Koschei (Inferno Earth)|Koschei]], the alternate version of himself. Koschei was imprisoned and tortured by order of [[Third Doctor (Inferno Earth)|the Leader]] of the [[Republic of Great Britain]]. 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 (novel)|The Face of the Enemy]]'')

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, he asked the Brigadier to move him to a new holding facility with a good view, and also encouraged [[Mike Yates]] to ask Jo out on a date. ([[PROSE]]: ''[[The Switching (short story)|The Switching]]'')

The Master was imprisoned inside a castle prison on [[Fortress Island]] as the only prisoner. He convinced his jailer, Colonel [[George Trenchard]], to help him steal electronic parts from [[HMS Seaspite|HMS ''Seaspite'']], telling Trenchard it was intended as a lure for enemy agents. With these parts, the Master instead made contact with the [[Sea Devil]]s, 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 unit]]s deteriorated during millions of years of hibernation, the Master saw it necessary to construct a [[sonar]] device to awaken them. The Master captured the Doctor and forced him to help create the 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 (The Sea Devils)|Myers]], was hypnotised and framed as the Master's corpse, ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'') and returned to the church crypt in Devil's End to retrieve his TARDIS. ([[PROSE]]: ''[[The Eight Doctors (novel)|The Eight Doctors]]'')

{{Section stub|Information from ''[[Doctor Who Fights Masterplan "Q" (short story)|Doctor Who Fights Masterplan "Q"]]'', ''[[The Spear of Destiny (short story)|The Spear of Destiny]]'', ''[[Listen - The Stars (short story)|Listen - The Stars]]'', ''[[Out of the Green Mist (short story)|Out of the Green Mist]]'', ''[[The Time Thief (comic story)|The Time Thief]]'', & ''[[Last of the Gaderene (novel)|Last of the Gaderene]]'' needs to be added}}

After three years of imprisonment in the [[Hyrrokin dimension]] for a crime he committed against the [[Hyrrokin]]s, the Master was recruited by a [[biomechanoid]] called [[Loge]] into tracking down three Hyrrokin warlords that had fled to Earth. However, after all three were retrieved, the Master learnt that he had been deceived and that Loge was in league with the warlords. When they planned to turn the sun into a supernova to destroy the Earth and use the emotional energy to power their vessel, the Master killed them to save the planet, as his TARDIS was still on it. ([[PROSE]]: ''[[Anger Management (short story)|Anger Management]]'')

While attempting to steal the [[British Crown Jewels]], the Master was cornered in the [[Tower of London]] by the Doctor, Jo and the Brigadier. ([[AUDIO]]: ''[[Masterful (audio story)|Masterful]]'')''

The Master made a deal with the [[Odobenidan]]s to help them invade Earth, but accidentally trapped both them and himself in a time loop beneath [[Greece]] whilst undertaking some temporal mechanics on their behalf. The Doctor, sent to Greece by the Time Lords to deal with the time loop, released the Master and foiled his plan after he had been trapped in the time loop for months. ([[PROSE]]: ''[[The Seismologist's Story (short story)|The Seismologist's Story]]'')

The Master discovered the mind parasite known as the [[Nurazh]] on a desolate planet. Weakened, the creature failed to take control of him, and begged him to take it off the planet. The Master agreed, taking it to the UNIT hospital [[Kenstone Hall]], where he planned to have it take control of the invalids, healing their injuries in the process, in order to give him an army of brainwashed slaves. The Nurazh, secretly planning to devour the Earth, eventually turned on the Master, who escaped into [[The Master's TARDIS|his TARDIS]] after releasing [[Jo Grant]] from the Nurazh's control. ([[PROSE]]: ''[[The Touch of the Nurazh (short story)|The Touch of the Nurazh]]'')

After being double-crossed by the [[Voord]]s, ([[PROSE]]: ''[[The Quantum Archangel]]'') the Master posed as "Professor [[Carl Thascalos]]" and 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' 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 (TV story)|The Time Monster]]'')

When [[Micro machine (The Heralds of Destruction)|a race of mechanical lifeforms]] invaded Earth, the Master, intrigued by a species he knew nothing about, began investigating them, insulted that they hadn't requested his aid in their invasion. When the [[Second Doctor]] showed up, the Master discovered that he was actually [[Ramón Salamander]] in disguise. After a few false starts, the Master allied with the Doctor and UNIT to thwart Salamander's scheme. After travelling back to [[1868]] with the Doctor and the UNIT, the Master took control of the micro machines, intending to use them for galactic conquest, but the Doctor overrode the Master's command protocols. Accepting his defeat, the Master jump into the [[River Thames]] and swam back to his TARDIS. ([[COMIC]]: ''[[The Heralds of Destruction (comic story)|The Heralds of Destruction]]'')

[[File:Master disguised as Brigadier.jpg|thumb|The Master "infiltrates" UNIT by dressing as [[the Brigadier]]. ([[PROSE]]: ''[[Out of the Green Mist (short story)|Out of the Green Mist]]'')]]

The Master tracked down a fellow Time Lord renegade, [[the Minister]], on the planet [[Samael]], where she was one of the most eminent political figures. Taking advantage of her post-regenerative weakness, the Master attacked her psychically and caused her [[amnesia]] so he could brainwash her into giving him power over the planet. His plan was foiled by Jo, who helped the Minister remember who she was. ([[AUDIO]]: ''[[The Same Face (audio story)|The Same Face]]'')

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 to the Web of Time to allow him to take control of Earth, but this plan was foiled by the Doctor and Jo. ([[PROSE]]: ''[[Hidden Talent (short story)|Hidden Talent]]'')

The Master brought a [[Skaross]] to Earth, and, with its help, disguised himself as "Professor Derek Drake", a scientist pretending to have found a way to solve the Earth's energy crisis and [[pollution]] problem. The telepathic power of the Skaross allowed the Master to gain the support of the public opinion, appearing numerous times on television, and even managed to confuse the Doctor for a while; the creature, however, proved to be very reluctant to obey the Master, and more than capable of resisting against his own psychic power. When it became evident that the Doctor had caught up to the ruse, the Master went to UNIT HQ and he and the creature offered to help humanity, but the Doctor refused, and instead gathered that the Master had come to ask for his help against the Skaross. Eventually, the Master gained access to the main reactor of a nuclear station, intending to blackmail the world by using the Skaross' ability to control [[carbon dioxide]], but the Skaross instead tried to convert Earth into a world it could live in. The Doctor and the Master then fought against it together, and won, connecting themselves with a telepathic link, which allowed them to see each other's thoughts. The Master then escaped in his [[TARDIS]]. ([[AUDIO]]: ''[[Terror of the Master (audio story)|Terror of the Master]]'')

The Master travelled to the [[Land of Fiction]], where he intended to steal an advanced piece of technology from the Land, and defeated [[James Moriarty|Professor Moriarty]]. ([[COMIC]]: ''[[Character Assassin (comic story)|Character Assassin]]'') He then became involved in "a galactic fracas" relating to "a number of large tortoises", but the Doctor and Jo put a stop to his scheme. ([[AUDIO]]: ''[[The Last Fairy Tale (audio story)|The Last Fairy Tale]]'') He also attended [[Bonjaxx]]'s birthday party at [[Maruthea]], and found himself forced to hide when a fight broke out. ([[COMIC]]: ''[[Party Animals (comic story)|Party Animals]]'')

The Master used [[time travel|time-displaced]] [[Scotland|Scottish]] warriors to seize a [[nuclear submarine]] and threaten Britain with obliteration if he wasn't given the Doctor's TARDIS, but he ended up trapped in the [[18th century]]. ([[COMIC]]: ''[[The Glen of Sleeping]]'')

[[File:The_Judas_Goatee_The_Master_and_Sontarans.jpg|thumb|left|The Master creates a new sect of Sontarans. ([[COMIC]]: ''[[The Judas Goatee (comic story)|The Judas Goatee]]'')]]

The Master travelled to a [[Sontaran]]-occupied planet and convinced several Sontarans that he was a deity, creating a new sect of proud, beard-toting column-worshipping Sontarans. The Master then left, delighted by the idea of the chaos he had created for the other Sontarans. ([[COMIC]]: ''[[The Judas Goatee (comic story)|The Judas Goatee]]'')

The Master tried to rob [[the Repository]] on a water planet to retrieve from a map to the [[Boneyard of Knives]]. In doing so, he used a de-evolutionary gun he took from a jungle planet to kill the guards by reducing them to a previous state in evolution. However, these new forms of life turned out to be personality [[leech|leeches]], and started to feed on him. The Master barely managed to get back to his TARDIS and leave a message to himself to recover from his memory loss and instructed himself to use the map to find the Boneyard, before collapsing to the ground and losing consciousness. ([[AUDIO]]: ''[[Master Thief (audio story)|Master Thief]]'')

The Master planned to release a fog in [[Tadcaster]] by using [[Sarkan]] [[mist-flower]]s to generate a fog that would engulf the Earth. 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 (comic story)|Fogbound]]'')

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 (short story)|Smash Hit]]'')

As he finally prepared to seize the matter transmuter, he found that [[Susan Foreman]], who had been living on Earth for thirty years with her husband [[David Campbell]], had gotten there before him and was trying to destroy the device. Though he failed to recognise her as the Doctor's granddaughter, he got the impression that she was at least one of the Doctor's former companions, and took her with him as a hostage back to his TARDIS. During a confrontation with the [[Eighth Doctor]], who was foiling the Daleks' plan and discovered the Master's presence in the process, he shot at the Doctor, but instead hit David, who threw himself in front of the Doctor to save him and died. The matter transmuter still in hand, the Master fled in his TARDIS, and took Susan with him, still unaware of her Gallifreyan heritage. As his TARDIS materialised on [[Tersurus]], Susan awoke from her shock-induced torpor and, with her mental abilities amplified by telepathic circuits of the Master's TARDIS, used her telepathy to focused all of her hatred and grief into a force that "burned away" at the Master's mind, chipping away at his personality until she revealed the "utterly unrepentant, inhuman core of it." Though reduced to a "trembling creature" by the experience, the Master did not lose his force of will nor his hatred for the Doctor, focusing the former on the latter and thereby hanging on to consciousness and a semblance of sanity.  

Believing she had weakened him into harmlessness, Susan forced the Master out onto Tersurus's surface, planning to strand him there. Having seized the Tissue Compression Eliminator, she planned to use it to destroy the Daleks' [[matter transmuter]]. The Master furiously clung to the device, refusing to let go even when she warned him that she would shoot it whether or not he was still holding it, and ended up doing so. The blast that resulted from the TCE hitting the matter transmuter nearly killed the Master and left his body as deformed as his mind. Susan knew that the matter transmuter's nature, combined with the Master's weakened mind, left him in no state to [[regeneration|regenerate]]. Believing him dead, Susan departed in his TARDIS. Susan's use of his TARDIS, however, alerted the Time Lords to the Master's presence on Tersurus, as Susan, in fear that the Master had programmed them to kill anyone other than him trying to pilot the ship, had switched off the TT capsule's defence systems. 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 (novel)|Legacy of the Daleks]]'')

According to another account, the Master decided to return to Earth immediately after the affair with the Daleks and the Draconians, and detected a massive discharge of temporal energy. He watched as the [[Twelfth Doctor]]'s TARDIS exploded ([[COMIC]]: ''[[Doorway to Hell (comic story)|Doorway to Hell]]'') in late [[1972]] after it was overloaded by its efforts to rewrite a mutated plague. ([[COMIC]]: ''[[The Pestilent Heart (comic story)|The Pestilent Heart]]'') The Master wrongly speculated this was the cause of the Doctor's third regeneration. ([[COMIC]]: ''[[Doorway to Hell (comic story)|Doorway to Hell]]'') When the Doctor moved in with [[Jess Collins]]' family in [[Brixton]] and brought the TARDIS into the back garden to repair itself, ([[COMIC]]: ''[[Moving In (comic story)|Moving In]]'') the Master plotted to use the [[artron energy]] given off by the regenerating TARDIS that now lay in the bodies of the Collins family to create a portal to a [[time lock]]ed dimension he learnt about in the Dalek databanks.  

When the TARDIS had healed in early [[1973]], the Master utilised the efforts of [[Katya Dabrowski]] to bring the Collins family to an apartment in central London, while creating a diversion for the Doctor in [[Barking]] with glass mosquito creatures. Warning the Collins family that the Doctor was a dangerous and deceitful alien, the Master tricked them into creating a portal to the time locked dimension, which they were also sent through. The Master also stole the Doctor's TARDIS after killing his chess buddy [[Gabriel Gayle]], and had the Doctor escorted from the Collins family's home to the Master's apartment. The Master linked the Doctor's TARDIS to his own in order to aid the Doctor through the time lock, so he could be reunited with the Collins family. After he killed [[Jack Hayes]] to prevent himself from being arrested, the Master had Katya accompany the Doctor to the other dimension.  

Travelling to the locked dimension, the Master met [[Kiadine]], a being who was locked away by the Time Lords for splitting a [[chronon]]. He gave the Master his powers so that he would conquer Gallifrey on his behalf. The Master's exposure to the chronon storm gave him god-like powers, and he began to fight with the Doctor for mastery of them. The Master fired one final attack as the Doctor stood arm-in-arm with the Collins family, and found that his attack had been repelled back at him with the same artron energy in the bodies of the Collins family that had brought the Master to the dimension. Though battered from the attack, the Master was able to escape in his TARDIS and, while declaring his intent of revenge on the Doctor, [[regenerated]] ([[COMIC]]: ''[[Doorway to Hell (comic story)|Doorway to Hell]]'') into his tenth incarnation. ([[PROSE]]: ''[[CIA File Extracts (novel)|CIA File Extracts]]'')

In an [[Alternate timeline (Supremacy of the Cybermen)|alternate timeline]] where the [[Cybermen]] allied with [[Rassilon]] to take over history, ([[COMIC]]; ''[[Supremacy of the Cybermen]]'') 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 (comic story)|Prologue: the Third Doctor]]'')

As the rival of the [[Third Doctor]], the "UNIT enemy" 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]]'') but, 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 "UNIT enemy" 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 (TV story)|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, and that 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 he was only able to resist its attack on him for a short time, and with great effort. ([[TV]]: ''[[The Mind of Evil (TV story)|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]]'') He held a particular hatred for humanity, deeming them primitives, ([[PROSE]]: ''[[Anger Management (short story)|Anger Management]]'') and once stated that destroying them would "be a reward in itself". ([[TV]]: ''[[The Sea Devils]]'')

The "UNIT enemy" 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]]'') and showed considerable delight in blackmailing the Doctor and Jo on Uxarieus. ([[TV]]: ''[[Colony in Space]]'')

Unlike his following incarnations, the "UNIT enemy" Master was rarely resentful, instead accepting defeat with only a slight annoyance. ([[TV]]: ''[[The Dæmons]]'', ''[[Frontier in Space]]'') The Master also learned from his mistakes, placing an alarm in his TARDIS ([[TV]]: ''[[Colony in Space]]'') after the Doctor stole his [[dematerialisation circuit]]. ([[TV]]: ''[[Terror of the Autons]]'')

During his imprisonment on [[Fortress Island]], the Master wore a black cape over a white turtle-neck jumper, with black trousers, but switched these for a naval officer's uniform while secretly infiltrating [[HMS Seaspite|HMS ''Seaspite'']]. During his return and subsequent escape from Fortress Island, he changed back into his black Nehru jacket and trousers. ([[TV]]: ''[[The Sea Devils (TV story)|The Sea Devils]]'')

Although they played antagonists on screen, [[Roger Delgado]] and [[Jon Pertwee]] were actually close friends in real life. In interviews and convention Q&A sessions, Pertwee often cited the death of Delgado as one of the factors that led him to leave the show. ([[DOC]]: ''[[PanoptiCon 93]]'', [[MM VHS 15]])