Followed by spoilers for the finale
One of the changes refers to an episode of the period of the fourth Doctor called “The brain of Morbius”, which refers to the secret versions of the hero that existed before the Doctor in the performance William Hartnell.
According to the last episode, this version is no longer considered the First Doctor, since before it there were other character reincarnations. With this move, the authors also explained the appearance of the mysterious version of the Doctor, which debuted in the fifth episode of the season.
The previous version of the Doctor from the fifth series of the season (right)
In addition, the Doctor is now considered the very first Time Lord. The memory of past reincarnations erased him Gallifreytsy. It also turned out that before the Doctor was part of a certain “Division” (The Division), operating outside the framework of the Time Lords – and this, apparently, greatly influenced his future lifestyle.
The person from whom they stole this ability was one of the “forgotten” versions of the Doctor – The Timeless Child. Moreover, data on the Doctor’s past during this period were mostly erased.
Others, on the contrary, have noticed that a number of changes are linked to past episodes,
and updating the canon is not something intimidating for a series with such a long history.
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