Sam Rockwell and Mickey Rourke are the villains in Iron man 2 we hear.
Rockwell will play Justin Hammer, a rival to Tony Stark industries who, as a EVIL GENIUS hijacks Stark technologies and gains remote control of the Iron Man suit to steal starks best secrets and sells the technology off to the highest bidders whcih culminates in the "Armour Wars"
Rourke will either play Crimson Dynamo, another suit wearing baddie or Whiplash, a Doc Octopus variant.
We shall keep you informed.