Ainda não, mas eles serão.
De acordo com uma entrevista com Nerd3 , showrunner Steven Moffat diz que a escolha do rosto do Doctor é algo que será abordado no universo.
I remember Russell [T Davies] told me that he had a big old plan as to why there were two Peter Capaldi’s in the Who universe: one in Pompeii and one in Torchwood. When I cast Peter and Russell got in touch to say how pleased he was, I said, ‘Okay, what was your theory and does it still work?” and he said, ‘Yes it does. Here it is…’
We’ll play that one out over time. It’s actually quite neat.
Já houve uma referência lateral em " Respiração Profunda " como o Doutor pensa em voz alta:
DOCTOR: ... Er, have you seen this face before?
BARNEY: No.
DOCTOR: Are you sure?
BARNEY: Sir, I have never seen that face.
DOCTOR: It's funny, because I'm sure that I have. You know, I never know where the faces come from. They just pop up. Zap. Faces like this one.
...
DOCTOR: Why this one? Why did I choose this face? It's like I'm trying to tell myself something. Like I'm trying to make a point. But what is so important that I can't just tell myself what I'm thinking?