The question is not "Who?" but "Where?", as heroes and villains from "Doctor Who" make mysterious appearances on Google Maps -- on the same day that Google adds 3D versions of the Shard and many other London landmarks you can fly over.
"Doctor Who" is the longest-running science fiction programme in the world, having celebrated its 50th anniversary last year. It is produced by the BBC, the UK's publicly-funded broadcaster. After more than a decade off the air, the show was resurrected in 2005 by BBC Wales. As such, it has largely been filmed in Wales, with Welsh capital Cardiff both doubling for London and becoming an important location in its own right as the setting for spin-off series "Torchwood."
And now a Cyberman head has appeared in the Welsh countryside near Pitwellt Pond, a body of water near the Brecon Beacons National Park in South Wales. A landing site, perhaps? A marker for the next Cyber-invasion?
Fortunately the Doctor isn't too far away: his time machine the TARDIS has materialised about five miles south on the other side of Merthyr Tydfil, which means he doesn't have far to go to rid the world of the cybernetic menace once again.
Update: It seems the Doctor has vanquished the threat, as Google has now removed these additions to the map. Members of the public can update Google Maps with MapMaker, which allows you to keep information on your local businesses and areas up-to-date.
Fly over London
Now the Cyber-threat has been eliminated, you can fly over the Shard, circle Trafalgar Square or swoop onto St Paul's Cathedral's famous dome within Google Maps and Google Earth for iOS and Android. 3D models of every building in the city have been recreated with 45-degree aerial imagery.
London is the fifth city in the UK to be rendered in three dimensions after Birmingham, Leeds, Reading and Stoke-on-Trent.
The TARDIS in Wales
"Doctor Who" has been filming in Wales recently ahead of the series returning on 23 August, with Peter Capaldi taking over from Matt Smith in the title role. The first trailer was revealed this week.
Other notable locations in Wales include Dunraven Bay, twenty miles west of Cardiff close to the village of Southerndown. Doubling for the fictional Bad Wolf Bay in Norway, the picturesque beach has been the setting for some of the series' most emotional moments as the Doctor bids goodbye to various companions there.
You can also explore the inside of the TARDIS in a Google Maps Easter egg that lets you wander around the Doctor's time machine.