Reverend D
Vague Apparition
- Joined
- Sep 22, 2018
- Messages
- 1,255
- Location
- Glasgow
Then there's The Master's past incarnation as Missy. She talked about her and the Doctor running around as Children. That now seems pretty unlikely. The timelines don't quite tally.
The Doctor speculates in the episode that the Division turned her back into a child, so I assume that when they wiped her memory, they forced a regeneration into an infant version of William Hartnell, which would have allowed her to meet the young Master.