"War Machine makes a very impactful appearance in the movie," Cheadle told MTV News. "It's significant."
As for how his character, Col. James "Rhodey" Rhodes has changed since the first film, Cheadle said the ramifications of Tony Stark's big reveal that he was Iron Man in the first film will be central to the theme of the sequel.
"It's gotten deeper, because in the first film Tony wasn't saying he was Iron Man. But now that he's embraced it, there's all this attendant problems, pressure, and questions that all of the characters around him have to deal with."