When Worlds Collide was the fourth story in the ongoing Doctor Who (2011) series from IDW.


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When Worlds Collide (1)[]

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Allies, Armies and Anvils (2)[]

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An Army of One (3)[]

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  • The Doctor says that the movie Young Guns II would have ended a lot better if they'd had sonic screwdrivers.
  • Fluronic gas is known to destabilise wormholes.
  • Rory gets trapped on World Two, one of the many worlds on Multiworld, while Amy gets trapped on World Three. The Doctor got stranded on World One.
  • Drak teleported other Sontarans to World Nine, where he himself was located.
  • Twelve variants of the Eleventh Doctor, Amy Pond, Rory Williams and each Sontaran are created.
  • A Sontaran dresses as Robin Hood.

Story notes[]

  • A new comic book-exclusive companion is introduced in the shape of Kevin, a robot shaped like a large dinosaur.


  • The Doctor pretends to be a gunfighter called Doc Gallifrey while acting in a Wild West simulation. The Eighth Doctor witnessed an alternate reality in which he was a gunfighter, also called Doc Gallifrey, in a similar Wild West-like place. (COMIC: The Glorious Dead)
  • Rory mentions guarding a box for 2,000 years. (TV: The Big Bang)