Captain Atom: Always Been a Menace to Society

"Captain Atom: Always Been a Menace to Society" from Captain Atom vol.1 #83 (Charlton, 1966) by David A Kaler, Steve Ditko and Rocke Mastroserio

Like Blue Beetle, I first discovered Captain Atom in Modern Comics' reprints of 60s Charlton superhero fare. The first one I got my hands on was in fact Blue Beetle's first appearance in the back-up. It may seem like Captain Atom was around for a long long time when you note this series ended at #89, but in reality, he started out in Space Adventures for 8 issues, then moved to Strange Suspense Stories in that series' 75th issue, and THAT became Captain Atom with #78. So the Captain's original journey basically spans the period between 1960 and 1967 (still pretty good), with a couple appearances up through the early 80s. The origin isn't all that different from the one you know from the DC version(s), though the metal skin was something that evolved midway through his own title to protect people from his innate radioactivity.