| Issue | #12 |
| Published | 1990 |
| Cover Price | 34.95 USD |
| Editing | Gregory Wright; Evan Skolnick (assistant editor); Tom Brevoort (assistant editor) |
| Genre | superhero |
| Pencils | Dave Cockrum |
| Inks | Dave Cockrum |
| Notes | a small reprint of the cover |
| Reprinted | from X-Men (Marvel, 1963 series) #101 (October 1976) |
| Script | Stan Lee |
| Letters | typeset |
| Genre | superhero |
| Pencils | Ryan |
| Inks | Al Williamson |
| Colors | Andy Yanchus |
| Genre | superhero |
| Pencils | Dave Cockrum |
| Inks | Dave Cockrum |
| Colors | Andy Yanchus |
| Letters | Gaspar Saladino |
| Reprinted | from X-Men (Marvel, 1963 series) #101 (October 1976) |
| Genre | superhero |
| Script | Chris Claremont |
| Pencils | Dave Cockrum |
| Inks | Frank Chiaramonte |
| Colors | Andy Yanchus |
| Letters | John Costanza |
| Editing | Archie Goodwin |
| Reprinted | from X-Men (Marvel, 1963 series) #101 (October 1976) |
| Genre | superhero |
| Pencils | Dave Cockrum |
| Inks | Dave Cockrum |
| Colors | Andy Yanchus |
| Letters | Dan Crespi |
| Reprinted | from X-Men (Marvel, 1963 series) #102 (December 1976) |
| Genre | superhero |
| Script | Chris Claremont |
| Pencils | Dave Cockrum |
| Inks | Sam Grainger |
| Colors | Andy Yanchus |
| Letters | John Costanza; Gaspar Saladino (pg 1) |
| Editing | Archie Goodwin |
| Reprinted | from X-Men (Marvel, 1963 series) #102 (December 1976) |
| Genre | superhero |
| Pencils | Dave Cockrum |
| Inks | Dave Cockrum |
| Colors | Andy Yanchus |
| Letters | Irving Watanabe |
| Reprinted | from X-Men (Marvel, 1963 series) #103 (February 1977) |
| Genre | superhero |
| Script | Chris Claremont |
| Pencils | Dave Cockrum |
| Inks | Sam Grainger |
| Colors | Andy Yanchus |
| Letters | John Costanza; Gaspar Saladino |
| Editing | Archie Goodwin |
| Reprinted | from X-Men (Marvel, 1963 series) #103 (February 1977) |
| Genre | superhero |
| Pencils | Dave Cockrum |
| Inks | Dave Cockrum |
| Colors | Andy Yanchus |
| Letters | Dan Crespi |
| Reprinted | from X-Men (Marvel, 1963 series) #104 (April 1977) |
| Genre | superhero |
| Script | Chris Claremont |
| Pencils | Dave Cockrum |
| Inks | Sam Grainger |
| Colors | Andy Yanchus |
| Letters | Bruce Patterson; Gaspar Saladino (pg 1) |
| Editing | Archie Goodwin |
| Reprinted | from X-Men (Marvel, 1963 series) #104 (April 1977) |
| Genre | superhero |
| Pencils | Dave Cockrum |
| Inks | Dave Cockrum |
| Colors | Andy Yanchus |
| Letters | Dan Crespi |
| Reprinted | from X-Men (Marvel, 1963 series) #105 (June 1977) |
| Genre | superhero |
| Script | Chris Claremont |
| Pencils | Dave Cockrum |
| Inks | Bob Layton |
| Colors | Andy Yanchus |
| Letters | Tom Orzechowski; Gaspar Saladino (pg 1) |
| Editing | Archie Goodwin |
| Reprinted | from X-Men (Marvel, 1963 series) #105 (June 1977) |
| Genre | superhero |
| Pencils | Dave Cockrum |
| Inks | Dave Cockrum |
| Colors | Andy Yanchus |
| Letters | Irving Watanabe |
| Reprinted | from X-Men (Marvel, 1963 series) #106 (August 1977) |
| Genre | superhero |
| Script | Chris Claremont; Bill Mantlo (co-plot) |
| Pencils | Bob Brown (pg 2 pn 5 - p 17 pn 3); Dave Cockrum |
| Inks | Tom Sutton |
| Colors | Andy Yanchus |
| Letters | Joe Rosen |
| Editing | Archie Goodwin |
| Reprinted | from X-Men (Marvel, 1963 series) #106 (August 1977) |
| Genre | superhero |
| Pencils | Dave Cockrum |
| Inks | Dave Cockrum |
| Colors | Andy Yanchus |
| Letters | Dan Crespi |
| Reprinted | from X-Men (Marvel, 1963 series) #107 (October 1977) |
| Genre | superhero |
| Script | Chris Claremont |
| Pencils | Dave Cockrum |
| Inks | Dan Green |
| Colors | Andy Yanchus |
| Letters | Joe Rosen |
| Editing | Archie Goodwin |
| Reprinted | from X-Men (Marvel, 1963 series) #107 (October 1977) |
| Genre | superhero |
| Pencils | Dave Cockrum |
| Inks | Dave Cockrum |
| Colors | Andy Yanchus |
| Letters | Annette Kawecki |
| Reprinted | from X-Men (Marvel, 1963 series) #108 (December 1977) |
| Genre | superhero |
| Script | Chris Claremont |
| Pencils | John Byrne |
| Inks | Terry Austin |
| Colors | Andy Yanchus |
| Letters | Denise Wohl; Tom Orzechowski (p 1-8, 10, 13) |
| Editing | Archie Goodwin |
| Reprinted | from X-Men (Marvel, 1963 series) #108 (December 1977) |
| Genre | superhero |
| Pencils | Dave Cockrum |
| Inks | Terry Austin |
| Colors | Andy Yanchus |
| Letters | Irving Watanabe |
| Reprinted | from X-Men (Marvel, 1963 series) #109 (February 1978) |
| Genre | superhero |
| Script | Chris Claremont |
| Pencils | John Byrne |
| Inks | Terry Austin |
| Colors | Andy Yanchus |
| Letters | Joe Rosen |
| Editing | Archie Goodwin |
| Reprinted | from X-Men (Marvel, 1963 series) #109 (February 1978) |
| Genre | superhero |
| Pencils | Dave Cockrum |
| Inks | Terry Austin |
| Colors | Andy Yanchus |
| Letters | Irving Watanabe |
| Reprinted | from X-Men (Marvel, 1963 series) #110 (April 1978) |
| Genre | superhero |
| Script | Chris Claremont |
| Pencils | Tony DeZuniga; Dave Cockrum (assist) |
| Inks | Tony DeZuniga |
| Colors | Andy Yanchus |
| Letters | Annette Kawecki |
| Editing | Archie Goodwin |
| Reprinted | from X-Men (Marvel, 1963 series) #110 (April 1978) |
| Genre | superhero |
| Inks | Al Williamson |
| Colors | Andy Yanchus |