Doctor Who and the New Alias (perhaps)

JO(hn) SMITH AND THE COMMON MEN

'John Smith' no more ...

"When in Rome ..."

'Professor Yana', 'The War Doctor', and 'Decider Login'.

Assimilate ...

Meanwhile, in Dumfries and Galloway, Scotland ...

Doctor Who?

https://www.youtube.com/watch?v=OqaNqE75xJ0

This skit stars the wonderful Clive Dunn, dressed as the 1st Doctor.
Clive is perhaps best known for playing
(Lance-) Corporal Jones in the iconic British sitcom "Dad's Army".

Then, more than half a century later, in 'Twice Upon A Time:
TWELVE (talking to ONE) :
"Come on. Up and at 'em, Corporal Jones."