The Wolves of Winter (comic story)

 was the sixteenth story of the Doctor Who: The Twelfth Doctor comic series, published in 2017. The story featured Bill Potts' first appearance in the ongoing Twelfth Doctor comic series, even though it was published only a few days after she left the Doctor in The Doctor Falls. It featured the return of two Martian species from Doctor Who - the Ice Warriors and the Flood.

Summary
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Plot
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Main story

 * Twelfth Doctor
 * Bill Potts
 * Sundvik
 * Ingiga
 * Grimvald
 * Halfdan
 * Ingigeror Ragnavald
 * Torkal
 * Asmund
 * Sskoll
 * Haathi
 * Ancient One

Flashback

 * Seventh Doctor
 * Ace

Continuity

 * The Doctor tells Bill that he once fought a werewolf with the Koh-i-Noor. (TV: Tooth and Claw)
 * The Doctor laments "Vikings. Again!" He also finds himself mistaken for Odin again. (TV: The Girl Who Died)
 * The Ice Warriors carry the Flood. (TV: The Waters of Mars)
 * Bill recognises the Ice Warriors. She had described them as being like The Vikings. (TV: Empress of Mars)
 * The Doctor tells Sskoll that he is a friend of Grand Marshal Skaldak. (TV: Cold War)
 * The Doctor tells the Vikings that Ragnarok was "a long time ago" and that "they made [him] play the spoons". (TV: The Greatest Show in the Galaxy)
 * Putting on a spacesuit with the Doctor again, Bill is pleased that she does not have to pay for oxygen. (TV: Oxygen)
 * The Doctor recognises the names of the "Asmund, Grimvald, Torkal, Halfdan. Brave Viking warriors." as he comes into contact with a messenger of Fenric. (TV: The Curse of Fenric)