The absence of a credit for a position doesn't necessarily mean the job wasn't required.
He proposed to her thinking she was a Zygon, then had to follow through on his commitment. Thirteenth Doctor.
The Doctor demands to know from the Controller who is in charge and who is responsible for Rose's death, but the Controller does not answer. Everything seems to be hunky dory for previously presumed dead Clara Now for a couple of moans.
Of all the big ongoing mysteries in Doctor Who that could have been answered, it's brilliant that they chose to answer this one.
Because of the ubiquity of this race, no attempt will be made here to list every appearance in every medium. The 3D was impressive but not showy and the effects certainly stood up to the big screen.
The Doctor can regenerate backwards There were two cheeky appearances from Doctors past and future: Season 11: Christmas special 2011. My favourites were Tennant's hammy reprisal of his once heartbreaking line "I don't want to go", and Smith's acknowledgement that the Doctor gets a lot more game than he use to.
Matt Smith. Season 18: The Runaway Bride. Eggheads would be great in surround sound.
Jodie Whittaker. Cancel Save. WOW DoctorWho. I'll probably look something like this on Christmas night.