History of character is unknown.
.45 calibre M3 Submachine Gun
- Although this character was originally introduced during DC's Earth-One era of publication, their existence following the events of the 1985-86 limited series Crisis on Infinite Earths remains intact. However, some elements of the character's Pre-Crisis history may have been altered or removed for Post-Crisis New Earth continuity, and should be considered apocryphal.
- Originally, Gunner MacKay was killed in action in Markovia in 1943 fighting the Anti-Monitor's Shadow Demons during the Crisis on Infinite Earths event.  He was later resurrected as the field commander of the Creature Commandos.
- 129 Appearances of Gunner MacKay (New Earth)
- 4 Images featuring Gunner MacKay (New Earth)
- Quotations by or about Gunner MacKay (New Earth)
- Character Gallery: Gunner MacKay (New Earth)
- Gunner at dccomics.com
- Gunner at Wikipedia.org
- Gunner biography page at the Unofficial Guide to the DC Universe