Jennifer Garner told Sci Fi Wire "Elektra has a rich, rich story in the comic books, particularly in Frank Miller's saga for her," Garner said. "We definitely mine the hell out of it. Elektra is a very dark character, so this will not be a sunshine movie. I've been training for Elektra for a couple of months. I've added Pilates in because I'm trying to make sure that everything is flexible and mobile and ready to go. Remarkably, my trainer for the last three years, Valerie Waters, has kept me pretty amazingly flexible through all this stuff that we've done. So I am in training and we start shooting in the beginning of May, right after we finish on Alias for the season."