| Issue | #12 |
| Published | December 1983 |
| Cover Price | $1.00 |
| Pages | 36 |
| Editing | Mark Gruenwald; Mike Carlin; Jim Shooter |
| Notes | Wraparound cover. |
| Genre | superhero |
| Pencils | Ed Hannigan |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Notes | Wraparound cover. |
| Letters | typeset |
| Characters | Valkyrie |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Bob McLeod |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Vance Astro |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Al Milgrom |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Vanguard |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Dave Cockrum |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Vanisher |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | June Brigman |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Vermin |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Mike Zeck |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Viper |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Mike Zeck |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Vision |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Paul Smith |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Vulture |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Bret Blevins |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Don McGregor; Rick Parker |
| Inks | Don Mcgregor; Rick Parker |
| Colors | Andy Yanchus |
| Letters | Rick Parker |
| Notes | Maps of Wakanda |
| Characters | Wasp |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Paul Smith |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Uatu |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | John Byrne |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Werewolf |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Don Perlin |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Whirlwind |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Kerry Gammill |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | White Queen [Emma Frost] |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Paul Abrams |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Will O' the Wisp |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | John Romita, Jr. |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Wizard |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | John Byrne |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Wolfsbane |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Bob McLeod |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Wolverine |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | John Byrne |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Wonder Man |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | John Byrne |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Wrecker |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Keith Pollard |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Thunderball; Piledriver; Bulldozer |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Luke McDonnell |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Professor X; Cyclops; Iceman; Angel; Beast; Marvel Girl; Mimic; Changeling; Polaris; Havoc; Nightcrawler; Wolverine; Banshee; Storm; Sunfire; Colossus; Thunderbird |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Paul Smith |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Phoenix; Ariel; Rogue; Fred Duncan; Moira MacTaggart; Lilandra Neramani; Stevie Hunter; Binary; Lockheed |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Paul Smith |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Wolfsbane; Karma; Sunspot; Mirage; Cannonball; Magma; Magik |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Paul Smith |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer); Eliot R. Brown |
| Pencils | Eliot R. Brown |
| Inks | Eliot R. Brown |
| Colors | Andy Yanchus |
| Letters | typeset |
| Notes | Diagrams of the X-Men mansion and a map of the area. |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer); Eliot R. Brown |
| Pencils | Eliot R. Brown |
| Inks | Eliot R. Brown |
| Colors | Andy Yanchus |
| Letters | typeset |
| Notes | Diagram of the X-Men jet. |
| Characters | Ymir |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Walt Simonson |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Yondu |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Al Milgrom |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Zeus |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Bob Hall |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Taurus; Gemini; Cancer; Leo; Virgo; Libra; Scorpio; Sagittarius; Capricorn; Aquarius; Pisces; Aries |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Mike Mignola |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Zzzax |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Mike Zeck |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Characters | Xantha; Xartans; Xeronians; Yirbek; Yrds; Z'nox |
| Genre | superhero |
| Script | Mark Gruenwald (Head Writer) |
| Pencils | Paty Cockrum |
| Inks | Joe Rubinstein |
| Colors | Andy Yanchus |
| Letters | typeset |
| Script | Mark Gruenwald (Head Writer) |
| Letters | typeset |
| Notes | Includes a "special announcement" by Mark Gruenwald announcing the three extra issues. |