WILX-10 News station reporter Kirk Montgomery spoke with one of the extras at Michigan State University, where a scene involving Bruce Wayne (Ben Affleck) and Lex Luthor (Jesse Eisenberg) was being filmed this week.
“I’ve also learned that the character of Robin is now female,” he said alluding to the film’s top secret script.
Warner Bros. declined to comment.
Malone, who appeared in “The Hunger Games: Catching Fire,” has been seen on the WB set and recent movie premieres sporting a new red hairdo.
Casting rumors for “Batman v Superman” have been in high demand since director Zack Snyder revealed the project at Comic-Con last year.
The anonymous extra who spoke to WILX faces a hefty fine of $5 million after signing a non-disclosure agreement with Warner Bros.
“Batman v Superman: Dawn of Justice,” co-starring Henry Cavill and Gal Gadot, opens March 25, 2016.