Jul 28(IBNS) Scarlett Johansson’s amazement knew no bounds when a mere thought of donning a Lycra catsuit for ‘Iron Man 2’ occupied her mind.

At least that’s how it happened for Scarlett Johansson. To play the Russian spy Black Widow in “Iron Man 2,” she adopted a true superhero workout.

“I kicked some major butt,” she told People magazine at Comic-Con 2009. “It was many, many, hours, days, and months of stunt training and strength training, but it’s fun because I had a goal. The goal was the Lycra catsuit.

“It was crazy to see it for the first time – everything all zipped up and all the weapons in there, bracelets on, the whole look. It was pretty sweet, I have to say.”

Jon Favreau unveiled eye-popping “Iron Man 2″ footage at Comic-Con on Saturday that included the metal superhero soaring through the sky, Mickey Rourke’s baddie brandishing electric whips, and War Machine unleashing a one-man offensive.

“Whose side is she fighting on? I don’t know,” Johansson said cryptically, following Favreau’s lead in playing off the character’s good and bad personas in the comics, while saying she’s neither a superhero nor a supervillain. “I think you’ve just got to call me a super shape-shifter, I suppose.