Doctor Hoo
Ominous corvid that killed Clara Oswald
What is a raven?
The greatest assassin in the universe - allegedly.
Who is Doom?
The 13th Doctor's longest standing companion.
Who is Yaz?
She's not quite there by the time of her first appearance, but by The Sontaran Strategem, she's fully qualified
Who is Dr Martha Jones?
She played a previously unknown incarnation of the Doctor, first appearing in Fugitive of the Judoon
Who is Jo Martin?
In The Goblin Song, this afternoon tea treat is best served with baby butter.
What are baby scones?
A lesser known classic Doctor Who companion (more's the pity!)
Who is Dodo?
Remarkably, this celestial body is in fact a giant egg.
What is the moon?
Creatures normally found in the Himalayas - but could be spotted on the London Underground, or in the Death Zone on Gallifrey.
What are yeti?
Who is Harry Sullivan?
As well as Lon in the 5th Doctor story Snakedance, outside of Doctor Who this actor also played the role that gives this category its name.
Who is Martin Clunes?
This Manhattan theatre star wowed crowds in 1930 with her rendition of "My Angel Put The Devil In Me".
Who is Tallulah?
Surname of siblings Kathy and Larry - but not their friend Sally, which would have been too easy
What is Nightingale?
This rather portentous figure was once the personal slave of nasty businessman Halpen, but now prefers to sing songs of praise and requiems.
Who is Ood Sigma?
This Professor's name was also an acronym of a warning given by the Face of Boe
What is Yana?
Scientist at the 3W Institute with an awful idea for swimming baths
Who is Dr Chang?
Martin Trueman was an astrologer with dangerous unearthly powers in this Sarah Jane adventure
What is Secrets of the Stars?
You can hear The Ballad of the Last Chance Saloon in this story - the saloon itself also features.
What is The Gunfighters?
Leadworth has a pond for these, though it is in fact empty.
What are ducks?
A blue-skinned guest of Platform One, who is never seen leaving his mobile seat
Who is the Moxx of Balhoon?
She ran Torchwood from its headquarters in Canary Wharf, and was partly responsible for ghosts appearing all over the world.
Who is Yvonne Hartman?
Dr Jade McIntyre from Arachnids in the UK was played by this actress who later went briefly missing - but no need to be frightened
Who is Tanya Fear?
This actor, singer and illustrator appeared as werewolf Mags in The Greatest Show in the Galaxy - and had a cameo voice role as Queen Elizabeth II in 2007.
Who is Jessica Martin?
This appropriately titled piece appeared in David Tennant's first proper Doctor Who episode, numerically speaking.
What is Song For Ten?
Comic and audio companion Frobisher was a shapeshifter, but preferred to take this form.
What is a penguin?
Wife of Morvin van Hoff - sadly, the cruise trip to Earth she won after thousands of attempts was Damned from the start.
Who is Foon?
The leader of the alien Voord - and rather bad at disguises
Who is Yartek?
Dr Constantine, who treated victims of The Empty Child, was played by this British actor and sitcom star - I don't believe it!
Who is Richard Wilson?
Director of classic Doctor Who stories including The Chase, The Web Planet, and the Dalek Invasion of Earth, who shares his first name with a Lionheart king.
Who is Richard Martin?
"Klokeda partha mennin klatch, naroon naroon naroon" are some of the lyrics to a Venusian lullaby which shares its tune with this real world Christmas carol.
What is God Rest Ye Merry Gentlemen?