The Monk Mortimus was a renegade Time Lord who had been a friend of the Doctor ' s on Gallifrey , until he fled Gallifrey to meddle in history under the alias of " the Monk " . ( TV : " The Time Meddler " ) According to one account , it was mostly the Doctor who addressed him as such , ( AUDIO : " The Secret History " ) although Mortimus once said that most people called him " The Monk " . ( AUDIO : " The Blame Game " ) Biography . Early life . Like all Time Lord s , Mortimus was taken from his family at the age of eight for the selection process in the Drylands . Staring into the Untempered Schism as part of a Time Lord initiation rite , Mortimus was driven mad by what he saw in the Schism . ( PROSE : " A Brief History of Time Lords " ) While he still lived on Gallifrey , Mortimus attended the Time Lord Academy with the Doctor and became a part of the Deca . When the Doctor uncovered Time Lord files regarding the Guardians , Mortimus was one of the first to delve into their secrets . He dropped out of the Academy after the Doctor , Rallon and Millennia took an illegal trip away from Gallifrey to the Celestial Toyroom . ( PROSE : " Divided Loyalties " ) Mortimus became an initiate of one of the colleges of scholars in the Capitol , trusted with keeping secrets , ( PROSE : " No Future " ) and also worked for the Celestial Intervention Agency . ( PROSE : " The Quantum Archangel " ) During this period , he was responsible for the Legion s ' imprisonment . ( PROSE : " The Crystal Bucephalus " ) According to , Mortimus " crossed and double - crossed " the CIA . ( PROSE : " The Quantum Archangel " ) As a renegade . After becoming an agent provocateur for the High Council , Mortimus found an interest in intervening in history . Becoming aware of other worlds where everything he believed in was meaningless , Mortimus turned to politics , attempting to " create a purpose out of nothing " . Finding politics to be full of betrayal , he retreated into hedonism , out of a desire for harmless fun . Through " some sort of controversy " , the High Council betrayed Mortimus . ( PROSE : " No Future " ) Fifty years after the Doctor left Gallifrey , the Monk escaped in a Mark IV TARDIS and decided to become a renegade as well , meddling with history for amusement . ( TV : " The Time Meddler " ) After he left Gallifrey , Irving Braxiatel heard that Mortimus had headed in the direction of Earth . ( PROSE : " The Empire of Glass " ) The Monk worked as an advisor to both the Morok s and Yartek , leader of the Voord . ( PROSE : " No Future " ) Mortimus encountered the Celestial Toymaker at one point . The Toymaker took a liking to him due to their similar personalities . ( PROSE : " Divided Loyalties " ) The Monk lent mechanical assistance to the builders of Stonehenge by providing anti - gravity lifts ; according to his logbook he gave Leonardo da Vinci tips on aircraft design , and he placed £200 in a London bank in 1968 and then travelled forward two hundred years to pick up a fortune in compound interest . The Monk was in 1066 Northumbria trying to prevent the Norman s from winning the Battle of Hastings as part of a plan to guide England into an age of technological prosperity when the First Doctor encountered him . After the Monk ' s plans were prevented , the Doctor sabotaged the dimensional control of his TARDIS , making it the same size inside as outside . With his TARDIS interior reduced to dollhouse proportions , the Monk seemed stranded in one time and place . ( TV : " The Time Meddler " ) Mortimus allied himself with the Ice Warrior s and battled the Fifth Doctor in a complex scheme involving alternative Earths and a giant Sonic weapon . ( COMIC : " 4 - Dimensional Vistas " ) Some time in the 21st century , the Monk tried to rig elections in what may have been the United States to stop President Sinatra from winning a third term of office . As he began this mission , he landed his TARDIS on a busy freeway . The Sleeze Brothers , El Ape and Deadbeat , collided with it , damaging their vehicle . At the same time , the companion - less Seventh Doctor landed his TARDIS in the same area . Besieged by angry brothers and an irate Doctor , the Monk slipped back into his TARDIS and took off . The Brothers hijacked the Doctor ' s TARDIS at gunpoint and ordered him to follow the Monk ' s TARDIS through time . A chase ensued , and the two TARDISes flitted to several famous mysteries in Earth ' s history . Finally , the Doctor and the Sleeze Brothers made the Monk ' s TARDIS implode , apparently causing the creation of the Bermuda Triangle . ( COMIC : " Follow That TARDIS ! " ) The Monk ran into the First Doctor again on the volcanic planet Tigus . The Monk sabotaged the lock on the Doctor ' s TARDIS , though that did not stop him from getting inside . The Doctor stole the Monk ' s direction controls to use in his effort to stop the Dalek s . The Monk ' s TARDIS landed in ancient Egypt . Knowing of the Dalek s , the Monk decided to help them regain the taranium core to avoid being exterminated himself , while trying unsuccessfully to convince the Doctor and his companion s of his honourable nature . The Doctor overpowered the Monk and placed him in a sarcophagus , where he was found by Steven Taylor and Sara Kingdom . He caused them to be captured by the Daleks , but was also held by them . The Doctor tinkered with the chameleon circuit of the Monk ' s TARDIS , making it take various shapes , finally that of a police box . The Doctor was forced to give the taranium to Mavic Chen , enabling his companions and the Monk to escape the Daleks . The Monk entered his TARDIS before the Daleks could recapture him . However the Doctor had stolen its partially compatible directional unit , last seen leaving the Monk on an ice planet . ( TV : " The Daleks ' Master Plan " ) Death ' s Champion . Now using his real name , the Monk made himself a champion to a the Eternal . Capturing the Chronovore Artemis , ( PROSE : " No Future " ) Mortimus used her to give Morka the power to kill the Third Doctor , ( PROSE : " Blood Heat " ) resurrect the Garvond , ( PROSE : " The Dimension Riders " ) empower Huitzilin , ( PROSE : " The Left - Handed Hummingbird " ) and restore the Land of Fiction . ( PROSE : " Conundrum " ) Mortimus then aided the Vardan s ' scheme to avenge themselves on the Doctor and the Sontarans by conquering Earth , a planet of continued strategic value to the Sontarans and of importance to the Doctor . His plan was undone thanks to the Doctor ' s companion Ace , who pretended to side with him until she could free Artemis . The vengeful Artemis subsequently took Mortimus away to make him pay for her imprisonment . ( PROSE : " No Future " ) Mortimus took Antonio Salieri back in time to kill Mozart when he was still a child , intending to cause damage to the Web of Time . Mortimus left before the murder took place and Salieri was stopped by the Seventh Doctor and the Tramp . Mozart escaped unharmed . ( PROSE : " The Tramp ' s Story " ) Mustachioed meddling . In a new body with a large moustache , the Monk allied himself with the Seeth and planned to use the Second Doctor ' s TARDIS to free them from a black hole . He shot a Time Lord Chapter 9 constable called Pavo and used her perception - altering ring to pretend to be her new regeneration . He convinced the Second Doctor , Jamie McCrimmon , and Victoria Waterfield that he was the real Pavo and took control of the Doctor ' s TARDIS with a Stattenheim remote control . He successfully freed the Seeth , but the Doctor stopped him and sent the Seeth back to their prison . ( AUDIO : " The Black Hole " ) The Monk heard about the Second Doctor ' s trial and exile on Earth and decided to visit the Doctor to see his new regeneration and get revenge for being trapped in the 11th century . He convinced the Doctor that he would take him to the 51st century where the Doctor could get a Vortex manipulator . The Monk did the exact opposite and took the Doctor far into the past during the formation of Earth . He trapped the Doctor on a Delphon ship which was in Earth as it formed . Liz Shaw convinced the Monk to return to the Doctor and save him . The Monk did just that and brought the Doctor back to his exile in the 1970s . While the Monk wasn ' t looking , Liz stole several important components from the Monk ' s TARDIS . The Doctor theorised that this would eventually cause the Monk ' s TARDIS to break . ( AUDIO : " The Blame Game " ) The Monk , now hiding in 1970s New York under the pseudonym " Reverend Mortimer " , forged an alliance with Cardinal Ollistra to infiltrate the business industry of the city and construct Gallifreyan structures that would protect them from the destruction of the universe . They also teamed up with the Weeping Angel s to power up these structures with time energy in exchange of human prey when they activate the said structures . However , when the Eleven came to him , the Monk helped him to corner Liv and Helen in the museum . Ultimately , the Monk was betrayed by the Weeping Angels who , hungry for potential energy , sent him back in time several centuries . ( AUDIO : " The Side of the Angels " ) Grander exploits . Travels with Lucie Miller . After regenerating again , the Monk placed a wanted ad for a willing fellow traveller and chose Lucie Miller as his new companion . Together they met Caligula and the Sensorite s , and watched a final of " Thordon ' s Got Talent " , before crash - landing in medieval Ireland due to the Monk ' s malfunctioning " directional whatsit " . The pair sought shelter in the Abbey of Kells until the Monk could finish repairs . ( AUDIO : " The Resurrection of Mars " ) In 1006 Ireland , the Monk sought an artefact known as the Book of Kells , hoping to use it as a replacement part for his TARDIS . During this time , he once again encountered the Eighth Doctor after grounding his TARDIS with a Time Scoop . ( AUDIO : " The Book of Kells " ) After escaping Kells , Lucie and the Monk went to the planet Questus , where the Monk had travelled back in time to kill the parents of a dictator in an avalanche to prevent the dictator ' s birth . At this point , after being dragged out of the avalanche , she tired of the Monk ' s meddling and began to consider his actions amoral , to the point of calling him a murderer . After this , the Monk " dumped " her on Deimos Moonbase in the 23rd century , deliberately placing her there in an attempt to grab the Doctor ' s attention . Reawakening the Ice Warriors centuries before they were meant to in order to give them the opportunity to terraform Mars back to how it was prior to their hibernation , the Monk planned to allow them to kill thousands of human colonists in the 23rd century , rather than billions on Halcyon a thousand years later . The Monk used Lucie to stop the Doctor from exploding a bomb that would have defeated the Ice Warriors . Realising he had been unsuccessful in distracting the Doctor , the Monk created an artificial gravity eddy to forcibly bring the Doctor back to Deimos . The Monk took the Doctor ' s companion , Tamsin Drew , to the aftermath of the Ice Warriors ' attack on Halcyon around the 33rd century , convincing her that the Doctor was responsible for the billions of deaths there , and subsequently showing her him apparently collaborating with the Ice Warriors in killing 600 people on a passenger rocket . Following the conclusion of the crisis , Tamsin told the Doctor that she had " had enough " of what she considered only looking out for his friends and the Web of Time , and was unable to forgive him for condemning the people of Halcyon to their fate , choosing to leave with the Monk . The duo set off to find " some old friends who also [ had ] a score to settle with the Doctor " to " combine their talents " . ( AUDIO : " The Resurrection of Mars " ) Helping the Daleks . The Monk helped the Dalek s invade Earth as they had in the 22nd century . In exchange for reviving the Dalek Time Controller when the Daleks realised they needed someone with superior temporal engineering knowledge than what they had to repair it , the Daleks promised him anything he desired . He used a Dalek virus from the far future and infected the Earth . He ejected the virus into Earth ' s atmosphere and moved forwards in time 3 years , and gave Tamsin the job of stealing human artefacts from museums for his personal collection . He lied to Tamsin , telling her that he was saving the artefacts for when the human race got back on its feet , but he knew the whole time the Daleks would wipe all humans out as part of the Dalek Time Controller ' s plan to turn the Earth into a plague planet which would be used to infect all of the planets whose inhabitants would threaten the Daleks in the future . ( AUDIO : " Lucie Miller " ) After the Daleks destroyed the collection in an attempt to kill the Doctor , and then coldly exterminated Tamsin , the Monk was devastated that he had allowed someone he had feelings for to die . Wishing not to cause any more death , he decided to help the Doctor . He saved Susan Campbell and him from the bomb that destroyed the Daleks . Under duress from the Doctor , who finally deduced who had helped the Dalek Time Controller , the Monk revealed it had been he who had released the plague on Earth . He was then ordered to leave the Doctor ' s sight after the Doctor found out that he had deployed the virus on Earth . He also revealed he had picked up the Doctor ' s TARDIS approaching the 22nd century , and prevented his arrival in time to stop the invasion from truly getting underway . ( AUDIO : " To the Death " ) Revenge on the Doctor . The Monk was deeply affected by the death of Tamsin Drew . In his despair , he formulated a plan to remove the Doctor from history so that Tamsin ' s death would never come to pass , convincing himself that the Doctor alone was responsible . He located Sophia , a time - sensitive Human / Hetrodon hybrid in ancient Greece and used her abilities to create a hole in space - time , which the Monk planned to use to take the Doctor ' s place in history . ( AUDIO : " The Secret History " ) His early experiments resulted in the Seventh Doctor taking the place of the Third Doctor on Delphin Isle , ( AUDIO : " The Defectors " ) and the Sixth Doctor taking the place of the Second Doctor in a Cyber - Tomb in the Kuiper Belt . ( AUDIO : " Last of the Cybermen " ) However , with the aid of their companions , the displaced Doctors were able to realise how their past selves would have dealt with the crisis and act accordingly , before the Monk ' s influence was undone and the original Doctors returned . ( AUDIO : " The Defectors " , " Last of the Cybermen " ) Finally , the Monk lured the Fifth Doctor to Constantinople in the year 540 in the place of the First Doctor , where he successfully replaced the Doctor ' s timeline with his own after putting the Doctor in a position where he would have to let alien healers take action on Earth or preserve history and let innocent people die . However , Sophia was able to sense the distortion to history as the Monk ' s casual interference made things worse , and used her abilities to bring the Doctor back into existence . The Doctor brought a group of Antoene warriors to Earth in order to blackmail the Monk into restoring the Doctor ' s timeline , the Monk faced with being killed by the Antoene for the Doctor ' s actions and the Doctor only willing to share his plan to stop them if the Monk restored his timeline . Lost for any better options , the Monk obliged before fleeing once again , informing the Doctor that he would return again , although the Doctor dismissed that plan as unimportant . ( AUDIO : " The Secret History " ) After the Time War . Mortimus survived the Last Great Time War and returned to meddling with time after Gallifrey returned from its pocket dimension . He had regenerated into a new body that the Doctor didn ' t recognise by this time . On one occasion , the Monk discovered an abandoned ship manned by robot s and full of time scoop technology . He took the ship to Loch Ness in 1979 with plans to use the time scoop to depopulate the planet and sell it to an alien race . Before doing that , he used the scoop to bring a plesiosaurus to the loch , increasing the amount of Loch Ness Monster sightings and attracting attention to the loch . The Twelfth Doctor and Clive Finch came to the loch to see the monster and discovered the Monk ' s plan . The Doctor used his sonic screwdriver to take control of the ship and had its robots restrain the Monk . The Doctor then erased Mortimus ' knowledge of the plan with a memory worm and sent him away in his TARDIS . ( PROSE : " The Persistence of Memory " ) Alternative timelines . In an alternative timeline , the Monk cooperated alongside the Master , the Rani 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 . In another alternative timeline he worked as an elite executive for the CIA , for whom he conducted an undercover mission for the Time Lords behind Enemy lines . ( PROSE : " The Quantum Archangel " ) Personality . The Monk was amoral and enjoyed meddling actively with history to his own selfish ends . He was also incredibly careless when it came to time travel . Unlike other Time Lords , the Monk didn ' t seem to care about the potential damage to fixed points or to the Web of Time . He also showed the habit of leaving behind anachronisms like a quartz wrist watch and an atomic cannon on a cliff where anyone could find it . ( PROSE : " The Time Meddler " ) The Monk also showed a childish and petulant side to his nature , although he did have a temper , and he could get annoyed and exasperated easily , usually when he was disturbed during his plans . ( TV : " The Time Meddler " ) Lucie Miller called the Monk a " murdering lunatic " and a " homicidal bloomin ' maniac " , while the Eighth Doctor unfavourably compared him to his seventh incarnation ' s habit of being " a man with the master plan " working for the " greater good " under the belief of the ends justifying the means . ( AUDIO : " The Resurrection of Mars " ) The Monk claims he started fresh on every incarnation , and tried to be " civil " with the Eighth Doctor ( although evidence suggests that this incarnation was before the Monk who was responsible for the deaths of Tamsin , Alex and Lucie ) . ( AUDIO : " The Side of the Angels " ) Throughout his appearances , the Monk has generally come across as a ' wannabe ' rather than a true villain or hero , with his greater plans and objectives fundamentally undermined by his own inability to recognise his limitations , such as participating in an alliance with the Daleks to conquer Earth because he believed that the Daleks would be defeated eventually ( AUDIO : " To the Death " ) or setting himself up to take the Doctor ' s place in the belief that he could be ' better ' than the Doctor , only for his former ally to see the future he would create and recognise that the Monk ' s actions were making things worse than they would have been if the Doctor had been allowed to continue existing . ( AUDIO : " The Secret History " )