User:NoNotTheMemes/Proving A Point

Professor Yana was a human identity created for himself when using a Chameleon Arch to escape the Last Great Time War.

Creation
At some point after he saw the Dalek Emperor take control of the Time Lords' Cruciform, which frightened him into fleeing from the war. (TV: The Sound of Drums) The Master fled to the far end of time and sent his TARDIS away to Gallifrey without him. He then used a Chameleon Arch to turn himself into a human, intending to eventually resume control of his body once the Time War had ended. (TV: Utopia, The Sound of Drums'')

Early life
Physically human, Yana believed he was found as a "naked child" on the coast of the Silver Devastation with only an "heirloom" fob watch, which he would carry throughout his life without ever thinking to open it, thanks to a perception filter. As a result of this perception filter on his own watch, he could never keep time and was always late for things.

Being a version of the Master, Professor Yana was plagued throughout his life by the Drumming (TV: Utopia) implanted into the Master's mind as a child (TV: The Sound of Drums) by Rassilon. (TV: The End of Time) However, unlike the Master himself, Yana heard the Drumming in short, overwhelming "spells", rather than a constant, even drumbeat. (TV: Utopia)

Career as scientist
Yana spent his life moving from one refugee ship to another. He had retained the Master's brilliant intellect and became a scientist; this made him invaluable to the scraps of civilisation remaining in the universe at this late stage of its history, as scientists were in short supply. There had not been a university in a thousand years by the time of Yana's "childhood", and the title of Professor, which he took on, was described by him as nothing more than an affectation. Over the years, Yana heard stories about how there was time travel in the old days, but never gave them much credit.

Yana ultimately became responsible for sending the remnants of humanity from their refuge on Malcassairo to Utopia. He became friends with another scientist, Chantho, who was thought to be the last of the native Malmooth race. Together, they worked on the Utopia Project to convey the surviving humans from the planet Malcassairo to Utopia. (TV: Utopia)

Meeting his end
Yana met the Tenth Doctor, Jack Harkness and Martha Jones, who spoke phrases curiously familiar to him, phrases such as Time Vortex, "extermination", Time War, Daleks and regeneration. Martha made the Professor aware of a watch in his possession. Hearing voices in his mind that commanded and entreated him, he opened it and returned to his true identity as the Master. (TV: Utopia)

Death
The Master then locked the Doctor out of Yana's lab, and opened the gate keeping the Futurekind at bay to keep the Doctor occupied as he ravaged Yana's lab. After Chantho threatened him with a gun to stop him destroying their work, the Master electrocuted her with a loose set of power cables, angered that she was never curious of the fob watch during their decades of working together, and left her for dead. However, Chantho used the last of her strength to pull a laser gun on the Master while his back was turned, and shot him in the chest before she died.

Fatally wounded, the Master slithered into the Doctor's TARDIS while the Doctor watched on and deadlock sealed the door shut to keep the Doctor out. Finding the idea of dying by the hand of "an insect and a girl" undignified, the Master decided to regenerate into a form that was as young and strong as the Doctor was. (TV: Utopia)

Legacy
The dying Face of Boe warned the Tenth Doctor of the Master's impending return with the last words, "You are not alone", (TV: Gridlock) which the Doctor eventually realised worked out to the acronym "YANA". (TV: Utopia)

Looking back at her various "past faces", and although he was not technically speaking a regeneration of hers, thought of Yana as "the Nice One", to be contrasted with  she became after Yana recovered his Time Lord memories. (PROSE: Meet Missy!)

Personality
In his human form, Yana was a benign old man who had lost faith in the Utopia project. His spirit was revitalised by the 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 Doctor, Yana could not tell Chantho fancied him much the way Martha fancied the Doctor. He had a deeply compassionate side wishing to help the last of humanity reach Utopia even planning to stay behind on Malcassairo and activate the rocket. (TV: Utopia)

After returning to his true identity, the Master became cold, ruthless, and dignified, but also abusive and condescending, citing that he had the right to attack Chanto when she pointed a gun at him. He was extremely aggressive towards Chantho after regaining his memories, stating that her constant cultural ticks drove him "insane" during their time together. He also ferociously resented her for not thinking that she could set him free from the fob watch. The Master held his 'human' self in contempt, seeing it as merely a disguise so perfect that he forgot his own identity. (TV: Utopia)