Jul 27, 2009, 13:21 GMT
Scarlett Johansson kicks "major ass" in 'Iron Man 2'.
Scarlett Johansson - She explained: "Well I have to say I loved doing all my stunt sequences, because those are the ones I know best. I've got to fight for them. I've got to be my own cheerleader. So, all the Black Widow sequences, of course. © Albert L. Ortega / PR Photos
The Hollywood beauty - who plays Natasha Romanoff and her alter-ego, sexy Russian spy Black Widow - enjoyed working on the comic book adaptation because she filmed her own violent stunt scenes.
She said: "I'm kicking some major ass - so I would say 'major' is the amount of ass I kick.
"Whose ass do I kick? Well, you're just going to have to wait and see. You don't really want to know, do you?"
Scarlett - who wears a high-tech tight black leather suit for the part - spent months training for the physical role.
Despite the hard work, the 24-year-old starlet says the physical sequences were her favorite scenes to film.
She explained: "Well I have to say I loved doing all my stunt sequences, because those are the ones I know best. I've got to fight for them. I've got to be my own cheerleader. So, all the Black Widow sequences, of course.
"Whose side is she fighting on? I don't know. I think you've just got to call me a super shape-shifter."
Scarlett took on the part after British actress Emily Blunt dropped out earlier this year.
'Iron Man 2' - which also stars Robert Downey Jr., Gwyneth Paltrow and Mickey Rourke - is due for release in May next year.
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