I have talked a little bit about death and resurrection in the past. Lightning Lad was one of the first major instances of it involving a hero in the DC universe, at least where the resurrection was not immediate.
But in the Silver Age, Marvel seemed to be the place where corpses got up and walked on a regular basis (especially villains), and so I thought I would try to catalog all of their examples. Of course, an undertaking like this is going to require the assistance of my readers. Although I have read virtually all of the Silver Age Marvel line, my memory's nowhere near as good as it used to be.
First up is Doctor Doom. The Lord of Latveria apparently succumbed at the end of several of his early adventures. For example:
Anyway, Dr Doom had more than his share of deaths in the early Marvel Age, so we'll skip over him. The next major villain to "die" in the FF was the Puppet Master:
I'm not sure if there are any other "deaths" in the Silver Age Fantastic Four, so let's move on to the Amazing Spiderman. The only real death and resurrection I'm aware of there involves the Vulture:
The only example of a major Marvel hero dying and not coming back for a couple of issues (a la Lightning Lad) involved Captain America. Death here from CA #111:
Note the "falling into water" bit I mentioned earlier. Cap's resurrection came in the first issue of his magazine that I ever bought:
I'm struggling now to think of resurrections involving other Marvel villains. About the only one that's coming to mind is the Rhino's passing from Hulk #104:
Bruce Banner's wedding in Hulk #124 as I covered awhile ago.
Oh, the Leader, that's right, he died in Tales to Astonish #74:
Black Widow had a couple of brushes with the Grim Reaper, as I have covered in the past. And I know the Unicorn appeared to die in Iron Man #4. Any more examples? I'm mostly interested in cases where the resurrection happened by the end of the Silver Age, simply because there are so many examples after that.
Updates: Some good suggestions in the comments section:
The Mandarin's castle was hit by an ICBM in ToS #86:
Titanium Man learned the fate of Silver medalists in the old Soviet Union:
Hat tip to Nick Caputo on that one.
The Red Skull biffed it again in ToS #91:
Another commenter pointed out that Magneto died in X-Men #53 and returned in X-Men #62; I can't find those issues at the moment to post panels.
Observations: One thing seems apparent; the villains who "die" on multiple occasions but return just as often tend to be Marvel's top antagonists; Dr Doom, the Mandarin, the Red Skull and the Leader are all on the short list of major baddies.
Update II: Diablo took a dirt nap thanks to his android, the Dragon Man, in FF #35: