In an interview with DC All Access, "Batman v Superman: Dawn of Justice" costume designer Michael Wilkinson revealed hidden details in Superman, Batman and Wonder Woman's outfits.

"We made sure we did our homework and looked into the histories of all these characters," he shared, adding it took a year to develop the costumes.

For instance, he pointed out the Kryptonian script hidden in Superman's costume. "Zack [Snyder] actually loved the idea that there was some Kryptonian script embedded in the suit," he explained. He gave me this fantastic quote he wanted us to translate into Kryptonian and incorporate it into the suit. It sort of deals with the nature of power and responsibility."

Directed by Zack Snyder and starring Ben Affleck, Henry Cavill and Gal Gadot, "Batman v Superman: Dawn of Justice" is scheduled to open on March 25, 2016.