Santa's existence is questioned by everyone, especially Shona, whom he angers, but he encourages them to focus on the dream crabs as Earth may have just seen its last Christmas depending on how many are there.
Shona wonders who Santa is, to which the Doctor sarcastically states to take a guess, listing the Easter Bunny and the Tooth Fairy. The Doctor bids farewell to the group as Clara goes after him; the Doctor explains that unless the group is stupid enough to let the dream crabs out, they should be fine.
The Caretaker. The Return of Doctor Mysterio. Casting-wise, it was notable for featuring the first on-screen Doctor Who appearance of Michael Troughton , son of Second Doctor actor Patrick Troughton and brother of David Troughton , who had previously made several of his own guest appearances on the series. For the purposes of this list, "Series 4" is considered to be the production series 4 , which ran all the way from Time Crash to The End of Time.
They are surprised this is yet another crab-induced dream. The Doctor's Meditation. Peter Davison. When I Say Run.
Written by Steven Moffat. The Doctor encourages Ashley to deduce what they are and what they do; he then explains that they are dying and most likely asleep. Season 15: Clara's Dream Christmas. The elves are surprised to have been upstaged; it's not very often that happens.
They discuss her life since they last met. Patrick Troughton. The dream Danny explains that while he did die, it was to save Clara; the rest of the world got lucky.