|The Red Hood's gang of re-furbished C-listers|
So right now, I'm thinking about the foundation for a new supers game, and what's on my mind is Brian Michael Bendis' run on The New Avengers and the several iterations that followed, up through the "Siege" storyline. This isn't too surprising since it is Bendis' work that formed the core of the Marvel Heroic Roleplaying game, which I ran for a long while.
Bendis began his arc with the "Breakout" event in which Electro is hired to bust Sauron out of the Marvel version of Supermax called the Raft, an island off the coast of New York City (because that's where you ought to keep all your supervillains). Containing the subsequent chaos is what brings most of the heroes together who will form the core of the new Avengers roster: Captain America, Luke Cage, Spider-Man, Spider-Woman, etc.
But the Breakout event also established a group of supervillains who would become the core of the antagonists throughout his run, individuals who had successfully escaped. Over the next many years, very few new villains would actually be introduced, but instead Bendis would rely on using and re-using the same characters. Most of the time the villains would be under the command of a smarter, more powerful chief antagonist such as the Red Hood or Norman Osborn. There were some heavy hitters like the Living Laser and Count Nefaria, some mid-tier threats like the Mandrill and the U-Foes, and some that barely qualified as mooks like Crossfire or Razor Fist. Eventually the Red Hood would resurrect most of the downright D-listers that were casually killed by the Scourge at the "Bar with No Name" massacre. You can find a complete list of the Red Hood's gang (and hence most of Bendis' roster) here.
Bendis had decades of material to sort through and pick out some pretty lackluster character concepts to overhaul. But it did get me thinking about world-building for superhero RPG's. One could get by with a pretty decent campaign with really only about a dozen low- to mid-tier villains, and two or three major archvillains. Like in the case of the Bendis Avengers, the lower-level villains could show up with some regularity as henchmen for the arch-villains or as convenient in media res sub-plots for sessions.
So time to crank out a bunch of new villains, much like I did ages ago with the "25 Villains of Christmas." Those 25 villains were the flesh and bone of the MHR campaign.