User:MrThermomanPreacher/Sandbox/The Master's thirteenth incarnation

The death of the Master's thirteenth incarnation was acknowledged by, herself a product of , on her Spacebook profile. (PROSE: Girl Power!)

Nature
By their nature as a Time Lord, the Master was born with an initial life cycle of 13 lives, which the Eighth Doctor knew had all been used by the time of 's trial on Skaro. (TV: Doctor Who) Missy acknowledged that she had first died thirteen times before before taking over "some bloke's body". (PROSE: Girl Power!) In fact,, who claimed to be nearing the end of his "twelfth regeneration", had acquired "" in the Trakenite Tremas. (TV: The Keeper of Traken) Surviving his execution on Skaro as a Deathworm Morphant, took the body of Bruce, a human. (TV: Doctor Who)

claimed to Chang Lee that the Doctor had taken most of his regenerations whilst the Doctor told Grace Holloway that the Master was both "on his last life" and had "[ran] out of all his lives". In their ensuing confrontation, the Master claimed that it was because of the Doctor that he had "wasted all [his] lives". The Doctor challenged this, reminding Lee that the Master claimed that he had stolen those lives when the reality was that the Master sought the Doctor's remaining lives after having "used all his lives", noting that the Master himself had just admitted to wasting "all of them". (TV: Doctor Who) In any case, the bodily theft was followed by the Master's fourteenth death. (PROSE: Girl Power!)

The Master on Earth
According to one account, who fought the Third Doctor during the latter's exile on Earth (TV: Terror of the Autons) was   as a result of Susan Foreman forcing him out onto Tersurus and attacking him with the Tissue Compression Eliminator while he was holding the Daleks' matter transmuter. (PROSE: Legacy of the Daleks)

According to Missy and the Thirteenth Doctor, however, the Master ended up in his rotting, lich-like state when he attempted to regenerate "one time too many" past the twelve-regeneration limit. (PROSE: Meet Missy!, The Doctor vs the Master) Indeed, it was known that a Time Lord's final incarnation could still possess regenerative energy (TV: The Angels Take Manhattan) and could even initiate a thirteenth regeneration, thought it was understood that this would result in the death of the Time Lord in question. (TV: The Twin Dilemma)

A Decaying Master
According to another account, the "UNIT era" Master, not yet out of regenerations, began to regenerate after being injured in a temporal storm after an encounter with the Twelfth Doctor. (COMIC: Doorway to Hell) Because he was suffering from an artron energy deficiency (PROSE: The Dead Travel Fast) as a result of the storm, his regeneration went wrong (COMIC: Doorway to Hell) and his new incarnation was brought into existence already horribly scarred. (PROSE: The Dead Travel Fast)

Yet another account showed that the the Thirteenth Master, as distinct from the "UNIT era" version, had enjoyed some span of existence in un-disfigured form before being injured in events involving his. (AUDIO: The Two Masters)

In any case, Goth observed that was "dying" with "no more regeneration possible". Spandrell believed, and the Fourth Doctor reiterated, that the Master had come to the end of his regeneration cycle, with Engin noting that there was "no plan that [would] postpone death" after the twelfth regeneration. Though the Doctor thwarted the Master's attempt to use the Eye of Harmony to completely regenerate himself, which would have destroyed Gallifrey, (TV: The Deadly Assassin) the Master was able to partially heal himself, (AUDIO: Trail of the White Worm) and eventually came to of the Trakenite Tremas. (TV: The Keeper of Traken)

Invalid sources
The Doctor Who Role Playing Game by FASA, which admits to taking liberties with the source material in its opening pages, gives a rundown of the Master's first thirteen incarnations in "The Master" supplement book, which was similar to (but not entirely consistent with) the in-universe biography given for the Master in FASA's own CIA File Extracts.

According to the book, the Master could control the form of his incarnations, and frequently used the same face. In a constant, bearded aristocrat form, the Master worked as a researcher on Gallifrey until his fifth incarnation attempted to lead a rebellion on Gallifrey, with the War Chief among his followers, which ended in failure and forced the now renegade to regenerate into an "average" clean-shaven form, becoming known as the Monk in his sixth and seventh incarnations. When the Master's activities as the Monk became known, he chose a new disguise when a crisis triggered his next regeneration, assuming. The appearance by which he would become best known, the Master was a dark, strikingly handsome and apparently middle-aged man, whilst in reality he was over 800 years old. He had an average height and build with distinguishing features including a "satanic" beard and piercing grey eyes whilst he was generally dressed in a black tunic with gloves.

At the start of his twelfth incarnation, the Master's fine, greying hair was brushed straight back from a high forehead and his black "devil's beard" was always "immaculately" groomed. His eyes remained a piercing grey, while his nose would be "best described as hawklike". Though the Master's twelfth regeneration retained his familiar form, it changed when injuries brought him to the brink of death without the ability to regenerate. Whilst the Master's iron will refused to accept annihilation, his body began to decay, becoming hideous and skeletal with his face a noseless, grinning death's head cloaked in shards of rotting flesh. The Master's voice, once resonant and commanding, was reduced to a hissing rasp, and he retained little control over his dying frame, which was covered with a black cloak and hood. Even so, his intellect remained undimmed and he eventually.

Other matters
In 2023, a fan-made infographic of the Master's incarnations which identified, and  collectively as the "Thirteenth Master", between  played by Roger Delgado and , was retweeted by the official Big Finish Productions Twitter account, who compared the character profiles to "new Weetabix cards".