The third "Iron Man" film will be loosely based on "Extremis" by Warren Ellis. In the books, the villian geneticist Killian was one of the creators of the Extremis technology that Iron Man adopted after Killian sold it to the terrorists.
"Iron Man 3" stars Robert Downey, Jr., Gwyneth Paltrow, and Don Cheadle. The film will be directed by Shane Black.
SOURCES: ComicBookMovie; Image