Iron Man 2 will surprise fans: Downey Jr

The 45-year-old actor, who plays Tony Stark and his alter-ego Iron Man in the movie, admits some viewers may be surprised by the storyline of the film.

Robert Downey Jr

Hollywood hunk Robert Downey Jr says

Iron Man

sequel will surprise fans.

The 45-year-old actor, who plays Tony Stark and his alter-ego

Iron Man

in the movie, admits some viewers may be surprised by the storyline of the film.

"I'd always thought that we know Tony is a little nuts, so why don't we play with the expectations about the kind of stuff he does?", said Downey Jr.

Admitting that the success of the first movie meant less worry about what would work on screen with director Jon Favreau, Contactmusic reported.

Iron Man 2

, which also stars Scarlett Johansson, Mickey Rourke and Samuel L Jackson, will be released globally in late April and early May this year.