• Genre:superhero

• First Line of Dialogue or Text:Arrghh!
Universe:Marvel : mainstream

• Angel [Warren Worthington III]

  (featured)
• Colossus [Piotr Rasputin]

  (featured)
• Nightcrawler [Kurt Wagner]

  (featured)
• Professor X [Charles Xavier]

  (featured)
• Sprite [Kitty Pryde]

  (featured)
• Storm [Ororo Munroe]

  (featured)
• Wolverine [Logan]

  (featured)

• Cyclops [Scott Summers]

  (without a universe)

  (guest)
• Captain Lee Forrester

  (without a universe)

  (guest) (first appearance)
• Douglas Moore

  (without a universe)

  (death) (supporting)
• Ellie Moore

  (without a universe)

  (death) (supporting)
• N'Garai

  (without a universe)

  (death) (villain) (first appearance)
• Carmen Pryde

  (without a universe)

  (supporting)
• Terri Pryde

  (without a universe)

  (supporting)
• Mariko Yashida

  (without a universe)

  (guest)

Synopsis:

Kitty is left home alone on Christmas Eve and tangles with a nasty demon.

Reprints (21)

• in Marvels universum (Semic, 1987 series) #4/1987
• in The Mighty World of Marvel (Marvel UK, 1982 series) #3 (August 1983)
• in Ryhmä-X (Semic, 1984 series) #11/1985 (1985)
• in Superaventuras Marvel (Editora Abril, 1982 series) #42 (8 Dezembro 1985)
• in Die Gruppe X (Condor, 1985 series) #9 (1987)
• in L'Uomo Ragno (Edizioni Star Comics, 1987 series) #26 (15 Giugno 1989) [pages 1-17], #27 (30 Giugno 1989) [pages 18-22]
• in Los Comics de El Sol (Planeta DeAgostini, 1990 series) #29 ([1990]) [pages 11-22]
• in X-Men Classic (Marvel, 1990 series) #47 (May 1990)
which is reprinted
• in X-Men Saga (Semic S.A., 1990 series) #18 ([octobre] 1994)
• in Essential X-Men (Marvel, 1996 series) #2 (August 1997) [black and white]
• in X-Men (Marvel, 1991 series) #109 (February 2001)
• in Wizard X-Men Masterpiece Edition (Marvel; Wizard, 2003 series) #1 (December 2003)
• in Marvel Holiday Special 2004 (Marvel, 2004 series) (2004)
• in Marvel Masterworks: The Uncanny X-Men (Marvel, 2003 series) #6 ([January] 2008)
• in Marvel Gold. La Imposible Patrulla-X (Panini España, 2011 series) #2 - Días del Futuro Pasado
• in Marvel. Официальная коллекция комиксов (Ашет Коллекция [Hachette], 2014 series) #11 - Люди Икс: Дни Минувшего Будущего
• in The Uncanny X-Men Omnibus (Marvel, 2006 series) #2 (2014)
• in Universo Marvel (Levoir, 2014 series) #9 - X-Men: Dias de um Futuro Esquecido
• in X-Men Epic Collection (Marvel, 2014 series) #7 - The Fate of the Phoenix (2021)
• in X-Men - La Collection Mutante (Hachette, 2020 series) #43 - Days of future past (mai 2022)
• in X-Men – Framtidens gårdag (Ades Media, 2026 series) (2026)

This issue's story is the first of scriptwriter Chris Claremont's many homages to the 1979 film "Alien" in the X-Men series.

Reprints (1)

• in The Uncanny X-Men Omnibus (Marvel, 2006 series) #2 (2014)

Letters of comment by Dr. Phillip S. Kott, Kurt Busiek, and Mark Yanko. Includes farewell to John Byrne and Terry Austin by Chris Claremont and "The Mighty Marvel Checklist!"