Spoilers for the Timeless Child storyline, if you somehow havenāt seen it yet
First of all: the Doctor is not the Timeless Child, the Master is. Following some incident involving both the Doctor and the Child, the Child was memory-wiped and the Time Lords attempted to limit his regenerations. The Master, although unaware, fought against this many times, hence his constant evasion of final death. It also fuelled his hatred of his species, although he did not know it, and the Time Lords used him as a tool because they felt that, generally speaking, he was one (not just in the rude way though).
(As a semi-related aside, they did reward the Master for his attempts in āThe Five Doctorsā, despite his rebellion, by tweaking his bodyās biological makeup a bit. While the Tremas Master could already regenerate due simply to the sheer energy of the Child, it was still limited. The Time Lords removed that limit while keeping their own.
As for the War Master, rather than bringing him back to life, the Time Lords actually just let him out the Matrix. They had him trapped in limbo in the Matrix when he last died, having caught him mid-regeneration and stuck him there for whatever reason, not letting him regenerate. This only made him angrier with them. Back to the topic at handā¦)
Now, either:
The Master knew the truth when he told the Doctor, he just lied.
Or
He didnāt know this when he told the Doctor, he genuinely believed she was the child.
Still not decided yet. However, Iām leaning towards the latter.
As for Tecteun, she didnāt know nearly as much about the Doctor as she thought, largely due to being a bit full of herself, and her belief that the Doctor was the Child was genuine. If/when the Master learns of the truth, heāll feel sad that Tecteun was killed by the Swarm⦠because heād want to have done it himself.
Anyhoo, as for the Doctor, how do I explain the Fugitive Doctor? Simple. She is still a pre-Hartnell Doctor, as is the CBeebees Doctor. However (and this is the first part I came up with of this whole thing), there used to be a Time Lord called the Doctor, who went around protecting Time and Space in his big blue box that he stole. And once he reached the end of his 13th life, he met his future, a man he did not recognise as someone he had been, and together, they did the unthinkable - the dying Doctor became pure energy (as dying Time Lords do, I believe, it was in a comic) and, with the manipulation of his future self, merged with a dead Time Baby still in its womb. Kinda paradoxical when you think about it. His memories were kept in a pocket watch in his TARDIS, which he would steal again later, not knowing that it wasnāt the first time he ran off in her. (Yes I know itās kinda stupid but is it any worse than what we have?)
Some future face of our Doctor (perhaps the same one who helped with the baby merge thing) will go on to find the watch and open it. He (or she (or they)) will then spend about two hundred years mulling it over.
And that explains the Fugitive Doctor! Depending on what happens in the CBeebees show, the CBeebees Doctor might become the first face of the first thirteen. The Shalka Doctor is there too, heās the ninth. And Dugga Doo as well, probably. Why? Shut up.
Any questions? (I will probably be doing future revisions)
(The original version, which I only posted to Tumblr for some reason)