Henry Cavill turns Joker!

Henry Cavill, who plays Superman, pranked Will Smith at San Diego Comic-Con over the weekend. Smith, who was promoting his film Suicide Squad, was busy signing autographs for fans. Cavill approached him for a photo, wearing a Guy Fawkes mask (seen in V for Vendetta).

After a while, Cavill removed the mask from his face, which Smith recognized after a delay of several seconds, spurring the star to a hearty laugh, reported EOnline.com. Cavill posted a video of the prank on Instagram, “Best Comic Con yet. I got to be here for Justice League but couldn’t miss Suicide Squad,” he captioned it.