| Issue | #12 |
| Published | July 1984 |
| Frequency | Monthly |
| Cover Price | 1.00 USD; 1.25 CAD; 0.50 GBP |
| Pages | 52 |
| Editing | Linda Grant (Assistant Editor); Denny O'Neil (Editor); Jim Shooter (Editor-in-Chief) |
| Notes | Double-Sized Issue. |
| Characters | Alpha Flight [Guardian; Sasquatch; Shaman; Snowbird; Aurora; Northstar; Puck] |
| Genre | Superhero |
| Pencils | John Byrne (signed) |
| Inks | John Byrne (signed) |
| Notes | Signature dated 1984. |
| Characters | Alpha Flight [Guardian [James MacDonald Hudson] (Death); Shaman; Snowbird; Aurora; Northstar; Puck; Marrina; Sasquatch]; Heather Hudson; Delphine Courtney; Jerome Jaxon [also as Box] (Origin); Omega Flight [Diamond Lil; Smart Alec; Flashback; Wildchild]; Sub-Mariner [Namor]; Roxxon Oil (flashback); August D'Angelo (flashback); Box [Roger Bochs] |
| Synopsis | Alpha Flight joins Guardian in battling Omega Flight; Mac's suit is damaged during the conflict and, with only seconds left to disable it, Heather accidentally distracts him and the Guardian suit blows up, reducing Mac to ashes. |
| Genre | Superhero |
| Script | John Byrne |
| Pencils | John Byrne |
| Inks | John Byrne |
| Colors | Andy Yanchus |
| Letters | Michael Higgins |
| Letters | Typeset |
| Notes | Letters of comment from readers Keivn Donaldson, Michael Doege, Lionel DeWitte, Robert Leroy Parker, Barbara Tywoniuk and Seona Kimbridge. |