Maybe I should have been paying more attention to the Avengers over the last few years. The Secret Invasion storyline is actually interesting. So far here’s who we know to be a Skrull:
Warning: spoilers follow:
Electra
Spiderwoman
Jarvis
Blackbolt
Hank Pym
Jarvis
Based on Bendis’s “shaky resurrection story” idea, here are some other likely candidates:
Captain Marvel
Aunt May
Iron Fist
Hellcat (haven’t noticed her anywhere for a while
Magneto
Colossus
Norman Osborn
In fact, pretty much any supervillian you care to name
Ben Parker (the clone, not Uncle Ben) but he’s dead again now
Green Arrow (wait, wrong company)
Of course the real problem with this story (and every other major universe shattering event–Civil War, World War Hulk, Annihilation, etc.) is that nothing can be allowed to seriously affect a major, profitable, movie-worthy character. That’s how we know Tony Stark isn’t a Skrull (with the sole possible exception if the real Tony Stark is not dead, but in cold storage somewhere to be resurrected later.)