00:00You will not believe how different Scarlett Johansson looked before she became Black Widow.
00:04To play the Marvel spy, she trained for months, learning martial arts and stunt fighting.
00:09She completely changed her diet and workout routine to build that iconic, athletic look.
00:14That transformation turned her into one of Marvel's most unforgettable heroes.
00:19So, which Marvel transformation impressed you the most?
00:23Comment below!
