| Issue | #12 |
| Published | November 1980 |
| Cover Price | 0.50 USD |
| Pages | 36 |
| Genre | superhero |
| Pencils | Jack Kirby |
| Inks | Chic Stone |
| Reprinted | from X-Men (Marvel, 1963 series) #6 |
| Genre | superhero |
| Script | Danny Fingeroth |
| Pencils | Al Milgrom |
| Inks | Al Milgrom |
| Letters | Michael Higgins |
| Notes | New bridging page. Credits provided 2005 by Danny Fingeroth and Al Milgrom. This sequence indexed 2005 by Steven Tice. |
| Characters | Sub-Mariner; Evil Mutants; X-Men; Professor X |
| Genre | superhero |
| Script | Stan Lee; Jack Kirby |
| Pencils | Jack Kirby |
| Inks | Chic Stone |
| Letters | Sam Rosen |
| Editing | Stan Lee |
| Reprinted | from X-Men (Marvel, 1963 series) #6 |
| Characters | Nick Fury |
| Genre | spy |
| Script | Jim Steranko |
| Pencils | Jim Steranko |
| Inks | Joe Sinnott |
| Letters | Sam Rosen |
| Editing | Stan Lee |
| Reprinted | from Strange Tales (Marvel, 1951 series) #168 (May 1968) |