| Issue | #12 |
| Published | November 1980 |
| Cover Price | $0.50 |
| Pages | 36 |
| Editing | Danny Fingeroth |
| Characters | Namor the Sub-Mariner; Krustatos |
| Genre | Superhero |
| Pencils | Marie Severin |
| Inks | Frank Giacoia |
| Reprinted | from Sub-Mariner (Marvel, 1968 series) #12 |
| Characters | Namor the Sub-Mariner; Lord Naga; Karthon; The Serpent Crown; Krustatos |
| Genre | Superhero |
| Script | Roy Thomas |
| Pencils | Marie Severin |
| Inks | Marie Severin |
| Colors | Marie Severin |
| Letters | Herb Cooper |
| Notes | Story is cut by three pages. Original pages 3 and 4 have been omitted. Original page 5 panels 1-4 have been deleted. |
| Reprinted | from Sub-Mariner (Marvel, 1968 series) #12 |
| Characters | The Vision; Detective McBain |
| Genre | Superhero |
| Script | Tom DeFalco |
| Pencils | John Fuller |
| Inks | Bruce Patterson |
| Colors | Bruce Patterson |
| Letters | Michael Higgins |
| Notes | House Advertisement for Marvel Comics Series (subscription page). |
| Characters | Mister Fantastic; Impercepto |
| Notes | Candy ad by the Baking Company using a one-page comic with Marvel heroes. |
| Notes | Total of 8 one-page and 1 two-page advertisements for: Trans Am Muscle (car models, Monogram), Super Gifts & Gimmicks (gifts, Fun Factory), Shop By Mail (miscellaneous ads, 2 pages), Electronic Marvel (electronic games, Markline), Tale Spinners from out of the Sky (tv, CBS Saturday, 2 pages), 100 Pc. Toy Soldier Set (toys, Lucky Products), Prizes or Cash (novelties, Olympic Sales Club), Lego Expert Builder Series (toys, LEGO). |